[666]*666Hunter, J.
The appellants (defendants), the Puyallup Tribe and Ramona Bennett, the Tribal Council chairwoman,1 appeal from a decision of the Superior Court for Pierce County, which determined the extent of their right to commercially fish for steelhead. The Washington State Department of Game has also appealed from certain aspects of the trial court’s decision.
This case does not involve a conflict of recent origin. Rather, the initial litigation commenced in 1963. Since that time, we have written two decisions, both of which have been reviewed by the United States Supreme Court. In order to place the present case in proper perspective, we shall initially set forth the nature of the issues previously raised and the decisions rendered.
In Department of Game v. Puyallup Tribe, Inc., 70 Wn.2d 245, 422 P.2d 754 (1967), we recognized that the Puyallup Tribe still existed and that its members enjoyed certain fishing rights under the Treaty of Medicine Creek. Furthermore, we held that these rights could only be limited through statute or regulations to the extent reasonably necessary for the conservation of the fishery. On review, the United States Supreme Court affirmed our decision. It held that while the rights secured by the treaty extended to off-reservation fishing, nevertheless “the manner of fishing, the size of the take, the restriction of commercial fishing, and the like may be regulated by the State in the interest of conservation, provided the regulation meets appropriate standards and does not discriminate against the Indians.” Puyallup Tribe v. Department of Game, 391 U.S. 392, 398, 20 L. Ed. 2d 689, 88 S. Ct. 1725 (1967) (hereinafter cited as Puyallup I). However, that court remanded the case for a determination of the issue of whether the total bar against [667]*667the use of set nets in freshwater streams or at their mouths was a reasonable and necessary conservation measure. In response to this decision, the Department of Fisheries, charged with the duty of regulating the salmon fishery, changed its regulations to allow a net fishery for salmon in those areas of the Puyallup River not utilized for spawning.
On the other hand, the Department of Game, which is the governing agency with regard to steelhead, refused to pass a similar regulation and continued to prohibit all net fishing for steelhead trout. In an appeal to this court, we held that the regulations passed by the Department of Fisheries were reasonable and consistent with the necessary conservation standards. Department of Game v. Puyallup Tribe, Inc., 80 Wn.2d 561, 497 P.2d 171 (1972). In regard to steelhead, we stated that while the Indians may have a right to a net fishery, nevertheless the steelhead run was not of sufficient size to withstand a commercial net fishery for that year. On review, the United States Supreme Court held that a total ban of net fishing would discriminate against the Indians, since the steelhead fishery was totally preempted by the hook and line, non-Indian sport fishermen. Department of Game v. Puyallup Tribe, 414 U.S. 44, 38 L. Ed. 2d 254, 94 S. Ct. 330 (1973) (hereinafter cited as Puyallup II). That court remanded the case for a determination of the percentage of the run which had to be allowed to escape in order to perpetuate the species, and the number of catchable fish which had to be apportioned to an Indian commercial net fishery. In a concurring opinion, three Justices noted that the majority opinion applied only to the natural run of steelhead.
On remand, the Superior Court for Pierce County held that the fishing rights afforded under the treaty did not extend to the hatchery run, that one-half of the natural run had to be allowed to escape in order to perpetuate the species, and that the Indians were entitled to catch 45 percent of the remaining one-half of the natural run, The Puyallup Tribe has appealed from the trial court’s decision in its entirety. The State Department of Game has appealed [668]*668from that portion of the decision which determined the size of the total natural run and the apportionment of 45 percent of the catchable fish to the tribe.
At the outset it seems appropriate to discuss the jurisdictional aspects of this case. Appellants have contended all along that the state courts do not have jurisdiction in this matter because issues pertaining to federal treaty rights are exclusively federal matters. We believe this contention is without merit for two reasons. First, in this case the State is concerned with a matter that is clearly within its jurisdiction — it is seeking to determine the extent to which it can apply its sovereign power to regulate resources for the purpose of conservation. See Puyallup I at 398-400. In order to do so, it is necessary to determine the extent to which Indians may be exempt from state regulations because of overriding federal treaty rights. See State ex rel. Campbell v. Case, 182 Wash. 334, 341, 47 P.2d 24 (1935). In this posture, the case is analogous to “a suit to enjoin violations of state law by individual tribal members fishing off the reservation,” a situation clearly within state jurisdiction. See Puyallup I at 397 n.11.
Second, and more importantly, jurisdiction is proper because the United States Supreme Court specifically remanded this case for a determination of a fair allocation that “accommodate [s] the rights of Indians under the Treaty and the rights of other people.” See Puyallup II at 49. We view Puyallup II as expressly conferring jurisdiction in this matter in the state courts.
It has also been contended that the recently established, continuing existence of the Puyallup Indian Reservation, see United States v. Washington, 496 F.2d 620 (9th Cir. 1974), cert. denied, 419 U.S. 1032 (1974), precludes any state jurisdiction over activities occurring within the reservation boundaries. We believe that this is at most simply not the case, and at least an open question after Mattz v. Arnett, 412 U.S. 481, 485, 37 L. Ed. 2d 92, 93 S. Ct. 2245 (1972). In addition, the Supreme Court’s clear mandate in Puyallup II would seem to include on-reserva[669]*669tion state jurisdiction. In order to control the escapement necessary for the conservation of the species, it is inescapable, given the geography in this case, that the State must be able to control on-reservation fishing activities. State regulation of on-reservation fishing is mandated by, and consistent with, the Supreme Court’s view of Indian treaty rights as presented in Puyallup II at page 49:
We do not imply that these fishing rights persist down to the very last steelhead in the river. Rights can be controlled by the need to conserve a species; and the time may come when the life of a steelhead is so precarious in a particular stream that all fishing should be banned until the species regains assurance of survival. The police power of the State is adequate to prevent the steelhead from following the fate of the passenger pigeon; and the Treaty does not give the Indians a federal right to pursue the last living steelhead until it enters their nets.
Finally, any suggestion that this court should defer to the United States District Court of Western Washington, in light of its continuing jurisdiction in a similar fishing matter, on grounds of comity, is not well taken. The present case was remanded by the Supreme Court to the state courts before that federal action was even started. There is no reason we should defer to the subsequently commenced, ongoing litigation in that federal court.
Therefore, we conclude that our jurisdiction is proper. Furthermore, as will be indicated later in the opinion, continuing jurisdiction over the Indians’ steelhead fishery must be exercised by the State Department of Game.
Before considering the issues raised by the appellants and cross-appellants, an analysis of the United States Supreme Court’s decision in Puyallup II is essential. Reading Puyallup II in context with Puyallup I, we feel that the issue of whether the Treaty of Medicine Creek gives the Indians a right to a commercial net fishery is at least an open question. In Puyallup II, the United States Supreme Court stated on page 48: “Our prior decision recognized that net fishing by these Indians for commercial purposes [670]*670was covered by the Treaty. 391 U.S., at 398-399.” However, as demonstrated below, the language of Puyallup I does not bear this out. In Puyallup I, the United States Supreme Court made the following statement on page 398:
The treaty right is in terms the right to fish “at all usual and accustomed places.” We assume that fishing by nets was customary at the time of the Treaty; and we also assume that there were commercial aspects to that fishing as there are at present. But the manner in which the fishing may be done and its purpose, whether or not commercial, are not mentioned in the Treaty. We would have quite a different case if the Treaty had preserved the right to fish at the “usual and accustomed places” in the “usual and accustomed” manner. But the Treaty is silent as to the mode or modes of fishing that are guaranteed. Moreover, the right to fish at those respective places is not an exclusive one. Rather, it is one “in common with all citizens of the Territory.” Certainly the right of the latter may be regulated. And we see no reason why the right of the Indians may not also be regulated by an appropriate exercise of the police power of the State. The right to fish “at all usual and accustomed” places may, of course, not be qualified by the State, even though all Indians born in the United States are now citizens of the United States. Act of June 2, 1924, 43 Stat. 253, as superseded by § 201 (b) of the Nationality Act of 1940, 8 U. S. C. § 1401 (a) (2). But the manner of fishing, the size of the take, the restriction of commercial fishing, and the like may be regulated by the State in the interest of conservation, provided the regulation meets appropriate standards and does not discriminate against the Indians.
In the final paragraph of the Puyallup I opinion, the Supreme Court drew the following conclusion on pages 401-03:
Whether the prohibition of the use of set nets in these fresh waters was a “reasonable and necessary” (70 Wash. 2d, at 261, 422 P.2d, at 764) conservation measure was left for determination by the trial court when the Supreme Court, deeming the injunction in No. 247 too broad, remanded the case for further findings. When the case was argued here, much was said about the pros and the cons of that issue. Since the state court has given us no authoritative answer to the question, we leave it un[671]*671answered and only add that any ultimate findings on the conservation issue must also cover the issue of equal protection implicit in the phrase “in common with.”
(Footnotes omitted.) Therefore, it certainly appears that the United States Supreme Court in Puyallup I declined to interpret the Medicine Creek Treaty with regard to the Indians’ right to a net fishery. We recognized this in our second decision, Department of Game v. Puyallup Tribe, Inc., 80 Wn.2d 561, 497 P.2d 171 (1972), when we stated on page 568:
[T]here can no longer be any question that whatever the United States Supreme Court may ultimately construe to be the Indian rights to fish under the Medicine Creek Treaty, they are subject to the reach of the state powers and regulations necessary to the conservation of the fishery, providing the regulations are not discriminatory against the Indians.
(Italics ours.)
In addition, it is important to place our decision in the above case in the correct perspective. The controlling issue there was the validity of regulations enacted by the Department of Fisheries and the Department of Game. The Department of Fisheries’ regulations allowed an Indian net fishery in the Puyallup River for salmon, subject to certain limitations for conservation purposes. The Department of Game regulations prohibited a net fishery for steelhead. Our decision was designed to determine the reasonableness of regulations and not to interpret the treaty itself. It was unnecessary to decide whether the Department of Game was required to pass a regulation allowing a net fishery for steelhead. Consequently, we overstated our case by indicating that an Indian net fishery was a matter of right under the treaty. To the extent that our decision lends itself to this interpretation, it is hereby overruled.
Considering the present appeal in this posture, we now direct our analysis to the interpretation of the Treaty of Medicine Creek that we deem to be correct. We feel that an interpretation .is necessary as an initial matter in order to [672]*672arrive at an allocation of steelhead in the Puyallup River that is consistent with and takes into account Indian rights under the treaty. Those rights must be determined before they can be given effect.
If the Treaty of Medicine Creek, December 26, 1854 (10 Stat. 1132), provides the Puyallup Indians with any fishing right at all beyond those possessed by ordinary citizens, the provision that does so is article 3 (10 Stat. 1133). See Puyallup I at 394-95 n.l. The pertinent language of article 3 is the following:
The right of taking fish, at all usual and accustomed grounds and stations, is further secured to said Indians, in common with all citizens of the Territory . . .
(Italics ours.) It is the interpretation of this treaty language that is crucial to any determination of Indian fishing rights. As with any Indian treaty, of course, certain longstanding and often stated rules of construction govern this very significant interpretation.
The rules of interpretation applicable to Indian treaties have been variously stated. Basically, treaties are to be interpreted in accord with the intent of the parties. So far as possible, the sense in which the Indians under-;' stood the treaties rather than a technical legal meaning should be given effect. Choctaw Nation v. Oklahoma, 397 U.S. 620, 631, 25 L. Ed. 2d 615, 90 S. Ct. 1328 (1970); Choctaw Nation of Indians v. United States, 318 U.S. 423, 432, 87 L. Ed. 877, 63 S. Ct. 672 (1943); United States v. Shoshone Tribe, 304 U.S. 111, 116, 82 L. Ed. 1213, 58 S. Ct. 794 (1938); Starr v. Long Jim, 227 U.S. 613, 623, 57 L. Ed. 670, 33 S. Ct. 358 (1913), quoting Jones v. Meehan, 175 U.S. 1, 11, 44 L. Ed. 49, 20 S. Ct. 1 (1899); United States v. Winans, 198 U.S. 371, 49 L. Ed. 1089, 25 S. Ct. 662 (1905); Worcester v. Georgia, 31 U.S. (6 Pet.) 515, 581, 8 L. Ed. 483 (1832). The United States Supreme Court stated this principle in Tulee v. Washington, 315 U.S. 681, 684, 86 L. Ed. 1115, 62 S. Ct. 862 (1942), as follows:
It is our responsibility to see that the terms of the treaty are carried out, so far as possible, in accordance with the [673]*673meaning they were understood to have by the tribal representatives at the council, and in a spirit which generously recognizes the full obligation of this nation to protect the interests of a dependent people.
Another recognized rule of construction requires that the language in treaties and statutes ratifying agreements with the Indians be construed liberally in favor of the Indians and never to their prejudice. Antoine v. Washington, 420 U.S. 194, 199, 43 L. Ed. 2d 129, 95 S. Ct. 944 (1975); Choctaw Nation of Indians v. United States, supra at 431; Worcester v. Georgia, supra. Likewise, any ambiguities or “doubtful expressions” are to be resolved in favor of the Indians. McClanahan v. Arizona Tax Comm’n, 411 U.S. 164, 174, 36 L. Ed. 2d 129, 93 S. Ct. 1257 (1973), quoting Carpenter v. Shaw, 280 U.S. 363, 367, 74 L. Ed. 478, 50 S. Ct. 121 (1930); Choctaw Nation v. Oklahoma, supra; Winters v. United States, 207 U.S. 564, 576, 52 L. Ed. 340, 28 S. Ct. 207 (1908).
These canons of construction, however, are not without their limitations. With regard to the rule that resolves ambiguities in favor of the Indians, the United States Supreme Court recently stated in DeCoteau v. District County Court, 420 U.S. 425, 447, 43 L. Ed. 2d 300, 95 S. Ct. 1082 (1975), as follows:
We give this rule the broadest possible scope, but it remains at base a canon for construing the complex treaties, statutes, and contracts which define the status of Indian tribes. A canon of construction is not a license to disregard clear expressions of tribal and congressional intent.
(Italics ours.) Similar limitations apply to all the liberal rules of construction mentioned above. First, the attempt as an initial matter, to prefer the Indians’ understanding of a treaty does not mean that their alleged understanding must prevail. “[E]ven Indian treaties cannot be rewritten or expanded beyond their clear terms to remedy a claimed injustice or to achieve the asserted understanding of the parties.” Choctaw Nation .of Indians v. United States, supra at 432. See Skokomish Indian Tribe v. France, 320 F.2d 205, [674]*674207 (9th Cir. 1963). The United States Supreme Court has also stated that
[w]e attempt to determine what the parties meant by the treaty. We stop short of varying its terms to meet alleged injustices. Such generosity, if any may be called for in the relations between the United States and the Indians, is for the Congress.
(Footnote omitted.) Northwestern Bands of Shoshone Indians v. United States, 324 U.S. 335, 353, 89 L. Ed. 985, 65 S. Ct. 690 (1945).
Second, the Supreme Court has said that it cannot “under the guise of interpretation, create presidential authority where there was none, nor rewrite congressional acts so as to make them mean something they obviously were not intended to mean.” Confederated Bands of Ute Indians v. United States, 330 U.S. 169, 179, 91 L. Ed. 823, 67 S. Ct. 650 (1947). Indian rights cannot be determined “under any acceptable rule of interpretation” merely because the Indians thought the right existed. Confederated Bands of Ute Indians v. United States, supra at 180. Hence, if the language in an Indian treaty is clear and unambiguous, then the courts cannot interpret the treaty in a way that will expand or go beyond the rights that are plainly set out by the treaty.
As heretofore stated, the important language to be construed in article 3 of the Treaty of Medicine Creek is “[t]he_ right of taking fish ... is further secured to said Indians, in common with all citizens of the Territory.” The meaning of this clause is clear and unambiguous on its face. Its plain meaning has significance and confers a distinct benefit. However, interpretation of the treaty requires us to construe and give meaning to the phrase “in common with.”
The general meaning of “common” has changed very little since the Treaty of Medicine Creek was written. Compare N. Webster, An American Dictionary of the English Language 231 (1862), and A Dictionary of American English 575 (W. Craige ed. 1936) with Webster’s Third [675]*675New International Dictionary (1961). The basic definition of “common” is not complicated. “Common” means “of or relating to a community at large (as a family unit, social group, tribe, political organization, or alliance) . . It therefore seems obvious that this treaty provision simply means that the Indians share in common, that is, share equally, with other citizens the opportunity to take fish. This treaty provision requires that as to their “accustomed grounds and stations” the Indians must not be denied the right to fish to the same extent as all other citizens of the state. State regulations governing fishing resources must treat Indians no better or worse than other citizens.
The United States Supreme Court seemed to recognize this interpretation when it said in the last paragraph of Puyallup 1, on page 403, “that any ultimate findings on the conservation issue must also cover the issue of equal protection implicit in the phrase ‘in common with.’ ” History also supports the view that the intent of the parties, as is clear from the provision’s language, was to preserve equal treatment for the Indians.
There were absolutely no limitations on anyone, Indian or non-Indian, as to the steelhead or salmon harvest until the last part of the nineteenth century. See Uncommon Controversy: Fishing Rights of the Muckleshoot, Puyallup, and Nisqually Indians 61-62 (A Report Prepared for the American Friends Service Comm.) (U. W. Press 1970); Johnson, The States Versus Indian off-Reservation Fishing: A United States Supreme Court Error, 47 Wash. L. Rev. 207, 213-14 (1972).2 This fact clearly indicates that at the time [676]*676of the treaty in 1854, the parties did not contemplate the event of conservation requirements necessary to preserve the species. There was an inexhaustible supply of fish, see Uncommon Controversy, supra at 4 n.3, 61-62, and the treaty was undoubtedly premised on this condition. Consequently, it is inconceivable that the parties to the treaty contemplated an allocation of the fish or an advantage of one over the other in the manner of taking fish. The fish were there for the taking. It was important only for the Indians to enjoy the right of taking fish in common with, i.e., on an equal basis with, the citizens of the territory. This is exactly what the parties must have intended. It is what the language of article 3 plainly provides in addition to assuring the Indians access to certain geographical fishing areas.
Our interpretation of article 3 means that Indians under treaties concerning fishing rights “in common with all citizens” are, to the same extent as other citizens, subject to state conservation regulations that meet appropriate standards. See Puyallup I at 398-99. However, the Indians’ treaty right to fish “at all usual and accustomed grounds and stations” cannot be qualified by the State. See Antoine v. Washington, supra at 206-07; Puyallup I at 398; United States v. Winans, supra at 381, 384. Thus the treaty language guarantees the Indians access to their usual and accustomed fishing grounds. This right of access cannot be contravened by the State even in the exercise of its police power for the conservation of fish as a natural resource. But the State can, for the purposes of conservation, properly regulate the public’s right to fish and such regulations are applicable equally to Indians and non-Indians.
The United States Supreme Court’s treatment of similar language in other Indian treaties is consistent with the above analysis. For instance, the court stated in United [677]*677States v. Winans, supra at 381, that the right of taking fish at all usual and accustomed places
was a right outside of those boundaries [the reservation] reserved “in common with the citizens of the Territory.” As a mere right, it was not exclusive in the Indians. Citizens might share it, but the Indians were secured in its enjoyment by a special provision of means for its exercise.
The court further stated that this right does not “restrain the State unreasonably, if at all, in the regulation of the right. It only fixes in the land such easements as enables the right to be exercised.” United States v. Winans, supra at 384.
Other Supreme Court treatments of this problem recognize more explicitly the equal regulation aspect. In New York ex rel. Kennedy v. Becker, 241 U.S. 556, 563, 60 L. Ed. 1166, 36 S. Ct. 705 (1916), which, as against Indians claiming a treaty right, upheld a state regulation prohibiting spear fishing, the Supreme Court justified the result as follows:
Rather are we of the opinion that the [treaty] clause is fully satisfied by considering it a reservation of a privilege of fishing and hunting upon the granted lands in common with the grantees, and others to whom the privilege might be extended, but subject nevertheless to that necessary power of appropriate regulation, as to all those privileged, which inhered in the sovereignty of the State
In Tulee v. Washington, supra at 685, the Supreme Court held that a state regulation requiring license fees for fishing could not be applied to Indians because “such exaction of fees as a prerequisite to the enjoyment of fishing in the ‘usual and accustomed places’ cannot be reconciled with a fair construction of the treaty.” However, the Supreme Court did clearly recognize the State’s right to regulate for conservation when it stated earlier in the opinion on page 684, that
the treaty leaves the state with power to impose on Indians, equally with others, such restrictions of a purely [678]*678regulatory nature concerning the time and manner of fishing outside the reservation as are necessary for the conservation of fish . . .
(Footnote omitted.)
Further support for the interpretation presented above —that the Indians share equally, i.e., in common with other citizens, the public right to fish and, in addition, are guaranteed access to certain fishing locations — is found in Seufert Bros. Co. v. United States, 249 U.S. 194, 63 L. Ed. 555, 39 S. Ct. 203 (1919). This case is particularly relevant because it involved article 3 of the Treaty with the Yakimas, June 9, 1855 (12 Stat. 951). That provision is nearly identical to article 3 of the Treaty of Medicine Creek. The two treaties were entered into contemporaneously. See Seufert Bros. Co. v. United States, supra at 196. The Supreme Court interpreted the treaty language as follows:
How the Indians understood this proviso we are considering is not doubtful. During all the years since the treaty was signed they have been accustomed habitually to resort for fishing to the places to which the decree of the lower court applies, and they have shared such places with Indians of other tribes from the south side of the river and with white men. This shows clearly that their understanding of the treaty was that they had the right to resort to these fishing grounds and make use of them in common with other citizens of the United States, — and this is the extent of the right that is secured to them by the decree [injunction] we are asked to revise.
Seufert Bros. Co. v. United States, supra at 198-99. See Puyallup I at 399.
We conclude therefore that a proper interpretation of the Treaty of Medicine Creek permits the State to promulgate conservation regulations meeting appropriate standards that affect all citizens, Indian and non-Indian, equally. However, such regulations cannot deny the Indians access to their usual and accustomed fishing places, nor can they restrain Indian fishing at those places except to the extent the regulations restrain the fishing rights of all state citi[679]*679zens, e.g., regulations as to time and manner of fishing, size of catch, etc.
It should be noted that this interpretation of the treaty-grants to the Indians certain rights that they otherwise would not clearly have retained at the time. In addition to guaranteeing access to certain fishing locations, article 3 of the treaty put them on an equal footing with “all citizens of the Territory.” Admittedly, such equal treatment would be superfluous today — it would give the Indians no additional rights beyond those that they already possess. But at the time of the treaty, equal footing with citizens of the Territory was very significant. When the treaty was written Indians were not citizens and, in addition, some of the normal methods of obtaining citizenship were not open to them. See Cohen’s Handbook of Federal Indian Law 154 (1971). Article 3 served a definite purpose because it assured the Indians that they would have a right to uninhibited access to their usual and accustomed fishing grounds. This guaranty was not unimportant in the context of a government policy designed to restrict the Indians to residence on the reservations as much as possible in order to avoid conflict between the Indians and the settlers. See E. S wind well, Report on Source, Nature, and Extent of the Fishing, Hunting and Miscellaneous Related Rights of Certain Indian Tribes in Washington and Oregon 55, 58-59 (Department of the Interior, 1942); Uncommon Controversy, supra at 41-42; Coan, The Adoption of the Reservation Policy in Pacific Northwest 1853-1855, 23 Ore. Historical Q. 1, 12, 14 (1922). Consequently, the interpretation above, which means the Indians were assured equal treatment at the time of the treaty (plus the absolute right of access to certain locations), does not mean that the Indians were merely given something that they would have had even without the treaty. Cf. United States v. Winans, 198 U.S. 371, 380, 49 L. Ed. 1089, 25 S. Ct. 662 (1905).
Certain treaty rights may now be nugatory due to subsequent events, that is, they are now enjoyed by the Indians simply because they are citizens of the United States. This [680]*680does not mean, however, that a court in the context of interpretation can expand and rewrite a treaty beyond its clear meaning at the time it was entered into. See Choctaw Nation of Indians v. United States, 318 U.S. 423, 87 L. Ed. 877, 63 S. Ct. 672 (1943).
The Treaty of Medicine Creek clearly provided for significant rights at the time it was concluded. The treaty cannot now be expanded beyond its unambiguous terms even if some of those terms have been superseded, thus making the treaty arguably unjust. See Northwestern Bands of Shoshone Indians v. United States, 324 U.S. 335, 89 L. Ed. 985, 65 S. Ct. 690 (1945).
Because the treaty, as well as the equal protection guaranties to the Constitution, demands that the Indians receive equal treatment, it is uncontroverted that any state regulation of fishing may not discriminate, that is, the regulations must apply equally to all citizens whether Indian or non-Indian. See Puyallup I at 398, 403; cf. New York ex rel. Kennedy v. Becker, supra at 562. In the absence of an overriding federal treaty right granting the Indians a right to fish for steelhead trout with nets, state regulations allowing Indians to fish with nets while denying that manner of fishing to other citizens would be discriminatory and, hence, improper. Cf. State ex rel. Campbell v. Case, 182 Wash. 334, 341, 47 P.2d 24 (1935). Equal protection is denied when similarly situated persons, e.g., all state citizens including Indians, are treated differently by allowing only a certain class to fish with nets. See Truax v. Corrigan, 257 U.S. 312, 334, 66 L. Ed. 254, 42 S. Ct. 124, 27 A.L.R. 375 (1921); State ex rel. Bacich v. Huse, 187 Wash. 75, 80, 59 P.2d 1101 (1936). Thus there would be no discrimination if all net fishing, including Indian net fishing, were prohibited. There is also no discrimination where all state citizens are only allowed to fish by a certain method, e.g., by hook and line. Illegal discrimination would occur only where one group is given special rights that the other group is denied, e.g., allowing only Indians to net fish or allowing only non-Indians to fish with hook and line. See Thomson v. [681]*681Dana, 52 F.2d 759, 764 (D. Ore. 1931), aff'd per curiam, 285 U.S. 529, 76 L. Ed. 925, 52 S. Ct. 409 (1932); State v. Hals, 90 Wash. 540, 542-43, 156 P. 395 (1916); Barker v. State Fish Comm’n, 88 Wash. 73, 76-77,152 P. 537 (1915).
Therefore, in the absence of special federal rights, state regulations permitting only one group to utilize a certain fishing method would be discriminatory and in violation both of constitutional equal protection guaranties and the straightforward language of the Treaty of Medicine Creek. Consequently, we hold that the manner of fishing permitted by any regulation for the conservation of the fishery must apply the same to Indians as to non-Indians. For example, if the prohibition of net fishing is necessary for the preservation of the fishery, it must be equally applied both to Indians and non-Indians in order to come within the ambit of the equal protection clause of the United States Constitution and the “equal protection” implication of article 3 of the Treaty of Medicine Creek.
As previously mentioned, we feel that the juxtaposition of Puyallup II beside Puyallup I demonstrates that the interpretation of the Treaty of Medicine Creek is an open question. For this reason, we have rendered the decision above as the first phase of our opinion. We recognize that the ultimate disposition of the treaty interpretation question is, however, vested with the United States Supreme Court. Moreover, we feel constrained by the express language on the face of Puyallup II, when considered independent of Puyallup I, to defer to the statement in Puyallup II, recognizing an Indian right to a net fishery. Therefore, pending an ultimate disposition of this issue by the United States Supreme Court, we will follow Puyallup II and undertake a consideration of the allocation question expressly called for by that case. We must determine two issues. First, does the Indian treaty right to a net fishery encompass only the natural run of steelhead, or does it extend to both the natural run and the hatchery run? Second, in terms of number of fish, how extensive is the right, and by what agency should this allocation be implemented? [682]*682We shall address ourselves to these issues in the above order.
The artificial propagation of steelhead through a hatchery program on the Puyallup River did not commence until 1933. Therefore, just as the inexhaustible supply of fish at the time of the treaty makes it inconceivable that the parties contemplated controls and limits on the fishery, it is also inconceivable that either the tribe or the government intended the treaty to create any rights beyond the natural run. However, by examining the treaty itself, we do find evidence which specifically relates to this issue. Even though the treaty obviously makes no reference to artificially propagated steelhead, which were unknown at the time, it does set forth Indian rights with regard to artificially cultivated shellfish. There is an explicit proviso in article 3 that follows the language securing “the right of taking fish.” The proviso states “[t]hat they [the Indians] shall not take shellfish from any beds staked or cultivated by citizens . . Treaty of Medicine Creek (10 Stat. 1132-33). This plain language demonstrates that the rights secured to the tribe under the treaty did not encompass artificially propagated sources of fish. Likewise, the Supreme Court indicated in Puyallup II that this result is correct. The majority opinion made no comment at all on the issue, but the concurring opinion of Mr. Justice White stated that “the Treaty does not obligate the State of Washington to subsidize the Indian fishery with planted fish paid for by sports fishermen.” Puyallup II at 49.
We can find no reason to distinguish artifically cultivated shellfish from hatchery bred steelhead since the impact of the treaty is to distinguish natural sources from artificial sources. To interpret the treaty in any other fashion requires this court to literally rewrite the terms of the treaty and this we cannot do. See Confederated Bands of Ute Indians v. United States, 330 U.S. 169, 91 L. Ed. 823, 67 S. Ct. 650 (1947); Northwestern Bands of Shoshone Indians v. United States, supra; and Choctaw Nation of Indians v. United States, supra.
[683]*683The appellants contend that the opposite result must obtain due to changed circumstances such as civilization and pollution which are claimed to have caused depletion of the natural run. We disagree. The treaty itself does not vest the Indians with any right in hatchery bred steelhead. Furthermore, the record does not demonstrate that the run has been depleted, but instead establishes that the artificially propagated run in fact augments the natural run since a hatchery bred steelhead loses its distinguishing characteristics upon returning to its native stream and henceforth is classified as a natural run steelhead. Mr. Millenbach, the Chief of the Fisheries Management Division, testified as follows:
Q. Now, does the Department of Game at no cost to the members of the Puyallup Tribe provide any services which enhance the Puyallup Tribe fishery? A. Well, the hatchery planting of smolt steelhead have contributed substantially to the net catch in the Puyallup River — the Indian net catch.
Mr. Heckman, who was called as an expert witness by the appellants and is a fishery biologist in charge of the Northwest Fisheries program, concurred in this opinion. The State thus established that the size of the natural run is increased yearly at no expense to the tribe. On the other hand, the appellants failed to introduce any evidence which substantiated their claim that the size of the natural run has in fact been depleted by the effects of modern society and, if so, the extent thereof. In conclusion, the appellants’ contention that changed circumstances justify the sanctioning of a net fishery for hatchery bred steelhead cannot be justified by the treaty and is not supported by the record. Consequently, their argument must fail.
This result, which excludes hatchery bred fish from the treaty right, is further supported by consideration of equity. The evidence below demonstrated that the steelhead program conducted by the State Department of Game is nearly totally funded by the citizens of the state, primarily [684]*684via license and other “user fees.”3 It would be manifestly unfair to give one group of citizens a superior opportunity to enjoy a resource thusly provided while denying other citizens, who provide the necessary funding, equal treatment. To allow the Indians to take hatchery fish by the use of nets would be to subsidize them to the extent that other state citizens are paying for the hatchery program, while being limited solely to the much less effective hook-and-line method of fishing.4 The Indian treaty does not demand such a subsidy. See Puyallup II at 49 (White, J., concurring).
We hold therefore that the Puyallup Indians have no rights in the hatchery run of steelhead other than those enjoyed by all citizens of the state. To hold otherwise would be to put the State to a Hobson’s choice: either to continue the hatchery program and thus provide the Indians with additional steelhead guaranteed to be caught in their nets; or, to discontinue the program altogether and thus deny the benefits of such a resource program to all citizens of the state. Our holding in no way discriminates against the Indians because they, like all other citizens, are still free, as they always have been, to catch hatchery fish by the hook-and-line method as provided under the regulations of the State Department of Game.
We now direct our attention to the final issue. How many actual fish must be made available for that net fishery, and in what manner should this allocation be implemented?
The trial court decision below was, quite simply, an at[685]*685tempt to follow the Supreme Court’s mandate in Puyallup II. The Supreme Court stated that the harvestable number of steelhead
must in some manner be fairly apportioned between Indian net fishing and non-Indian sports fishing so far as that particular species is concerned. . . .
The aim is to accommodate the rights of Indians under the Treaty and the rights of other people.
(Italics ours.) Puyallup II at 48-49.
In order to do this, the trial court first determined, as we have, that the Indians’ treaty right does not extend to hatchery fish. It then found that the total steelhead run in the Puyallup River is composed of hatchery and natural fish in equal proportions, i.e., half the run is of natural origin and half is of hatchery origin. This finding is amply supported by the record. The record also supports the trial court’s finding that a 50 percent escapement factor is required for the propagation of the natural run. Fifty percent of the natural run must be allowed to spawn in order to preserve the species. The trial court thus determined, in effect, that half the total annual steelhead run was natural and that it would be consistent with conservation (escapement) requirements to harvest half of the natural run.
After making the above determinations, the trial court then disposed of the main issue — the ultimate allocation between an Indian net fishery based on the treaty and the sports fishery. Based on equitable factors, the trial court found that giving the Puyallup Treaty Indians 45 percent of the annual, natural steelhead run available for harvest would be a fair apportionment of the resource. Using estimates of the annual natural run size based on evidence relating to past steelhead runs, the trial court translated this percentage share into an exact number of fish, provided that the annual run size continued to be of the same magnitude as the run size estimates before the court.
We believe that 45 percent of the harvestable natural run was an equitable determination by the trial court in the exercise of its discretion. We cannot say from this [686]*686record that such a determination was a manifest abuse of discretion. We therefore are not disposed to disturb this holding of the trial court. See Granite Equip. Leasing Corp. v. Hutton, 84 Wn.2d 320, 328, 525 P.2d 223 (1974); State ex rel. Carroll v. Junker, 79 Wn.2d 12, 26, 482 P.2d 775 (1971).
The number of fish resulting from this apportionment will probably vary, of course, from year to year depending on the size of the natural run. The evidence in the record does not clearly establish a constant annual natural run size. On the contrary, the record indicates that the run size varies from year to year. The available estimates ranged from about 4,000 in the natural run to 56,000 in the total run. It is therefore obvious that the effect of this allocation decision will be determined each year by the size of the natural run. Thus it is necessary to decide who should be charged with the duty to make this annual allocation determination.
The Department of Game is the expert state agency charged with the duty to conserve the states’ game resources, including the steelhead trout. See RCW 77.12.010, .040. The Supreme Court recognized in Puyallup II on page 48, that conservation decisions must be made by an expert. “Only an expert could fairly estimate what degree of net fishing plus fishing by hook and line would allow the escapement of fish necessary for perpetuation of the species.”
The 45 percent allocation figure of this decision applies to the harvestable amount of the annual, natural steelhead run, i.e., the amount available after conservation requirements are met. This allocation will necessarily depend on the Department of Game’s estimates of the natural rim size each year and its annual approximations as to the harvest-able number of fish in the natural run. The department’s annual determination of the harvestable number of fish in the natural run, that is, its determination of the escapement requirement calculated to assure preservation of the species, will therefore determine the extent of the Indian net fishery required by federal treaty. Forty-five percent of the [687]*687harvestable natural run is the extent of this treaty right. The Department of Game’s annual determination will actually yield the number of fish that the Indians can catch using nets pursuant to the treaty rights that, for purposes of this part of our opinion, we have assumed to exist.
By thus transforming the Indian right to a net fishery into an actual number of fish, it is possible to recognize this Indian treaty right in light of conservation requirements and in the context of the total annual steelhead run. The total run consists of both hatchery and natural origin steel-head, while the treaty right only applies to the natural fish. It is possible to differentiate the two types of fish by certain markings, but they are substantially identical in size and all other characteristics. In practical terms there is no way to assure that only natural fish will be caught in the Indian nets.
All of the hatchery fish are harvestable because their escapement is not required to preserve the natural run. Thus, if the Indians take annually the actual number of their treaty fish, the rest of the harvestable natural run, plus the rest of the hatchery run, will still be available to the sports fishery.5 This method allocates the fish available, in light of conservation requirements, between the Indians’ net fishery and the sports fishery — it assures that the Indian treaty right is recognized.
To summarize, in phase one of the opinion, we hold that the Puyallup Tribe’s right to a net fishery under the Treaty of Medicine Creek has never been directly adjudicated. It is our belief that the treaty language “in common with” does not require that the Indians be exempted from State regulations. Rather, all that the treaty requires is that the regulations apply equally to Indians and non-Indians. Because we feel bound to follow the express language on the [688]*688face of Puyallup II, under phase two of our opinion, we hold that allocating 45 percent of the harvestable natural steelhead run each year to the Indian treaty net fishery is a fair apportionment between Indian net fishing and sports fishing. The Department of Game has the responsibility to determine the extent of the harvestable natural run and to accommodate this apportionment when establishing annual conservation regulations.
The judgment of the trial court is affirmed, except as to the modification thereof, wherein we direct the Department of Game to implement the annual allocation of steelhead consistent with this opinion. The first phase of our opinion is held in abeyance pending a final disposition of the treaty interpretation issue by the United States Supreme Court, at which time a reversal of the trial court decision, consistent with the first phase of this opinion, may be necessary.
Hamilton and Wright, JJ., concur.