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Rainbow Trout - Oncorhynchus mykiss
State Rank Reason (see State Rank above)
The only native population of Rainbow Trout, the Columbia Redband Trout, is limmited in distribution and facing threats from hybridization with nonnative salmonids as well as warming water temperatures
General Description
The rainbow trout is Montana's number one game fish. Rainbow trout were introduced from numerous hatchery stocks into virtually every suitable habitat in the state, beginning in 1889. Scientists believe that only the rainbow trout of the upper Kootenai River drainage are native to this state. This small group of natives are a Fish of Special Concern. Rainbow trout introductions have caused a severe reduction in the range of the native cutthroat trout through hybridization and competition. Rainbow trout fare well under a wide range of habitat conditions from ponds to reservoirs, lakes, and streams. Various strains of rainbow trout, like breeds of cattle, are used for different purposes. The state has stocked hundreds of millions of rainbow in state waters in the last 100 years. However, today the policies have evolved and rainbow trout are stocked primarily in lakes and reservoirs but no longer in streams. The state record for rainbow trout is over 33 pounds, and fish of up to 10 pounds are common in some of our most productive waters. Rainbow are efficient at feeding on plankton, aquatic and terrestrial insects, and occasionally some smaller fishes. They spawn in early spring in running water, usually April or May, and maintain themselves quite nicely if the habitat is not degraded.
Diagnostic Characteristics
Montana: both pure and moderately hybridized populations of westslope cutthroat trout have a high incidence of basibranchial teeth, whereas pure rainbow trout lack these teeth; presence of basibranchial teeth in some individuals of a rainbow trout population indicates hybridization with westslope cutthroat trout (Leary et al. 1996). Individuals living in large or turbid lakes or under ice tend to be iridescent silver.
Species Range
Observations in Montana Natural Heritage Program Database
Number of Observations: 18249
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Migration
Migrates into tributary streams from lakes to spawn and river populations may also move upstream and/or into tributary streams.
Habitat
Cool clean streams, lakes, res., farm ponds. Able to withstand wider range of temperatures than most trout. Spawns in streams over gravel beds (Brown 1971, Holton 1981).
Food Habits
Feed mainly on aquatic insects but eat what is available to them. Large adults also eat fish (Brown 1971). River populations mostly insect eaters while zooplankton and forage fish are important in Lake Koocanusa (Huston et al. 1984).
Ecology
Populations of native and introduced rainbow trout as well as their hybrids coexist in Kootenai River drainage.
Reproductive Characteristics
Sexually mature 2-3 years but sometimes 1 year. Spawns April-July depending on water temperatures. Eggs hatch in 50 days at 50 degrees F. (Brown 1971). Young smolt at 0-2 years in tributaries and lake Koocanusa (Huston et al. 1984, May and Huston 1979).
Stewardship Responsibility
References
- Literature Cited AboveLegend:
View Online Publication
Brown, C.J.D. 1971. Fishes of Montana. Bozeman, MT: Big Sky Books/Montana State University. 207 p.- Holton, G.D. 1981. Identification of Montana's most common game and sport fishes. Montana Outdoors May/June reprint. 8 p.
- Huston J.E., P. Hamlin; B. May 1937-; Montana. Dept. of Fish, Wildlife, and Parks.; United States. Army. Corps of Engineers. Seattle District. 1984
- Leary, R.F., W.R. Gould, and G.K. Sage. 1996. Success of basibranchial teeth in indicating pure populations of rainbow trout and failure to indicate pure populations of westslope cutthroat trout. North American Journal of Fisheries Management 16:210-213.
- Lee, D.S., C.R. Gilbert, C.H. Hocutt, R.E. Jenkins, D. E. McAllister, J. R. Stauffer, Jr. 1980. Atlas of North American freshwater fishes. North Carolina State Musuem of Natural History. 867 p.
- May, B.E. and J.E. Huston. 1979. Status of fish populations in the Kootenai River below Libby dam. Montana Department of Fish, Wildlife, and Parks. 57 pp.
- Scott, W.B. and E.J. Crossman. 1973. Rainbow trout, Kamloops trout, Steelhead trout Salmo gairdneri Richardson. pp. 184-191. In: Freshwater fishes of Canada. Ottawa, Canada: Fisheries Research Board of Canada, Bulletin 184. 966 p.
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?- Allendorf, F.W., D.M. Espeland, D.T. Scow, and S. Phelps. 1980. Coexistence of native and introduced rainbow trout in the Kootenai River drainage. Proc. Mont. Acad. Sci. 39:28-36.
- Alvord, W. 1953. A study of scales from known-age trout. M.Sc. Thesis. Bozeman, MT: Montana State University. 31 p.
- Anderson, Ryen A. 2004. Occurrence and seasonal dynamics of the whirling disease parasite, Myxobolus cerebralis, in Montana spring creeks. M.Sc. Thesis. Bozeman, MT: Montana State University. 89 p.
- Avery, E.L. 1969. Effects of domestic sewage on aquatic insects and salmonids of the East Gallatin River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 23 p.
- Bahn, L. 2007. An assessment of losses of native fish to irrigation diversions on selected tributaries of the Bitterroot River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 118 p.
- Barnard, D. and J. Vashro. 1986. ASARCo Rock Creek project, baseline fisheries assessment. MTFWP Report under contract to ASARCo. 22 p.
- Barndt, S.A. 1996. The Biology and Status of the Arctic Grayling in Sunnyslope Canal, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 136 p.
- Bear, E.A. 2005. Effects of temperature on survival and growth of Westslope Cutthroat Trout and Rainbow Trout: implications for conservation and restoration. M.Sc. Thesis. Bozeman, MT: Montana State University. 68 p.
- Belford, D.A. 1986. Abilities of trout to swim through highway culverts. M.Sc. Thesis. Bozeman, MT: Montana State University. 67 p.
- Berg, W.J. and G.A.E. Gall. 1988. Gene flow and genetic differentiation among California coastal rainbow trout populations. Canadian Journal of Fisheries and Aquatic Sciences 45:122-131.
- Bianchi, D.R. 1963. The effect of sedimentation on egg survival of rainbow trout and cutthroat trout. M.Sc. Thesis. Bozeman, MT: Montana State University. 28 p.
- Bishop, C.G. 1953. Age, growth, and condition of trout in Prickley Pear Creek, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 22 p.
- Boussu, M.F. 1953. Relationship between trout populations and cover on a small stream. M.Sc. Thesis. Bozeman, MT: Montana State University. 26 p.
- Boyd, J.W. 2008. Effects of water temperature and angling on mortality of salmonids in Montana streams. M.Sc. Thesis. Bozeman, MT: Montana State University. 56 p.
- Brown, P.J. 2010. Environmental conditions affecting the efficiency and efficacy of piscicides for use in nonnative fish eradication. Ph.D. Dissertation. Bozeman, MT: Montana State University. 109 p.
- Campton D.E. and J. M. Johnston. 1985. Electrophoretic evidence for a genetic admixture of native and nonnative rainbow trout in the Yakima River, Washington. Transactions of the American Fisheries Society 114(6):782 -793.
- Carlson, J.Y., C.W. Andrus, and H.A. Froehlich. 1990. Woody debris, channel features, and macroinvertebrates of streams with logged and undisturbed riparian timber in northeastern Oregon, U.S.A. Canadian Journal of Fisheries and Aquatic Sciences 47:1103-1111.
- Carty, D.G. 1985. Potential impacts of altering discharge pattern from Hauser Dam, Missouri River, on young-of-the-year brown and rainbow trout. M.Sc. Thesis. Bozeman, MT: Montana State University. 84 p.
- Chapman, D.W. 1982. Effects of Kootenai River hydroelectric project, FERC No. 2752, on Kootenai River Fisheries. Billings, MT: draft technical report to Bureau of Indian Affairs. 154 p.
- Clancey, T.P. 1983. Effects of renovation on the Sacajawea Park Lagoon system in Livingston, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 54 p.
- Clothier, W.D. 1952. Fish loss and movement in irrigation diversions from the West Gallatin River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 32 p.
- Connor, W.P. 1988. Effects of gas supersaturated water on juvenile brown and rainbow trout. M.Sc. Thesis. Bozeman, MT: Montana State University. 96 p.
- Dalbey, S.R. 1994. Effects of electrofishing on long-term growth and mortality of wild rainbow trout. M.Sc. Thesis. Bozeman, MT: Montana State University. 46 p.
- De Rito, J.N. Jr. 2004. Assessment of reproductive isolation between Yellowstone cutthroat trout and rainbow trout in the Yellowstone River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 60 p.
- Dieterman, D.J., M.P. Ruggles, M.L. Wildhaber, and D.L. Galat (eds). 1996. Population structure and habitat use of benthic fishes along the Missouri and Lower Yellowstone Rivers. 1996 Annual report of Missouri River Benthic Fish Study PD-95-5832 to U.S. Army Corps of Engineers and U.S. Bureau of Reclamation. 238 p.
- DosSantos, J.M. 1985. Comparative food habits and habitat selection of mountain whitefish and rainbow trout in the Kootenai River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 68 p.
- Downing, D.C. 2000. Spawning and rearing ecology of Madison River rainbow trout in relation to whirling disease infection risk. M.Sc. Thesis. Bozeman, MT: Montana State University. 65 p.
- Duncan, M.B. 2019. Distributions, abundances, and movements of small, nongame fishes in a large Great Plains river network. Ph.D. Dissertation. Bozeman, MT: Montana State University. 255 p.
- Dwyer, W.P. and R.G. White. 1995. Influence of electroshock on short-term growth of adult rainbow trout and juvenile Arctic grayling and cutthroat trout. North American Journal of Fisheries Management 15:148-151.
- Elser, A.A. 1967. Fish population of a trout stream in relation to major habitat zones and channel alterations. M.Sc. Thesis. Bozeman, MT: Montana State University. 27 p.
- Endicott, C.L. 1996. Responses of riparian and stream ecosystems to varying timing and intensity of livestock grazing in central Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 115 p.
- Fausch, K.D. 1992. Life as a trout, predator. Trout Magazine Winter 1992. pp. 63-74
- Fickeisen, D.H., and J.C. Montgomery. 1978. Tolerances of fishes to dissolved gas supersaturation in deep tank bioassays. Trans. Am. Fish. Soc. 107(2):376-381.
- Foster, G.M. and B.E. May. 1990. Distribution of Yellowstone and westslope cutthroat trout in the Gallatin National Forest (update). Bozeman, MT: Gallatin National Forest unpublished report. 23 p.
- Fox, A.C. 1961. Parasite incidence in relation to size and condition of trout from two Montana lakes. M.Sc. Thesis. Bozeman, MT: Montana State University. 16 p.
- Fox, A.C. 1965. The life cycle of Bolbophorus confusus (Krause, 1914) Dubois, 1935 (Tremotoda: Strigeoidea) and the effects of the metacercariae on fish hosts. Ph.D. Dissertation. Bozeman, Montana: Montana State University. 48 p.
- Fredenberg, W.A. 1980. The fishery for fall-running rainbow trout in the Missouri River near Townsend, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 62 p.
- Fry, J.P. 1960. The food of rainbow trout, brown trout and brook trout fry and fingerlings from five southwesternMontana streams. M.Sc. Thesis. Bozeman, MT: Montana State University. 37 p.
- Gerald, J.W. 1965. Food habits of the Longnose Dace, Rhinichthys cataractae. M.Sc. Thesis. Bozeman, Montana: Montana State University. 27 p.
- Gilham, A.T. 2016. Relationship between intensity of livestock grazing and trout biomass in headwaters of east front rocky mountain streams, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 45 p.
- Gillespie, D.M. 1966. Population studies of four species of mollusks in the Madison River, Yellowstone National Park. Ph.D. Dissertation. Bozeman, Montana: Montana State University. 43 p.
- Gustafson, D. L. 1990. Ecology of aquatic insects in the Gallatin River drainage. Ph.D. Dissertation. Bozeman, MT: Montana State University. 194 p.
- Ham, B.R. 2014. The evaluation of pellet type-preference and dietary soy sensitivity in Snake River cutthroat trout (Oncorhynchus clarkia). M. Sc. Thesis. Bozeman, MT: Montana State University. 77 p.
- Hanna, T.D. 1992. The effect of oxygen supplementation on the toxicity of ammonia (nh3) in rainbow trout Oncorhynchus mykiss (Richardson). M.Sc. Thesis. Bozeman, MT: Montana State University. 51 p.
- Heim, K.C. 2019. Mechanisms of Rainbow Trout hybridization with native Cutthroat Trout in the Lamar River of Yellowstone National Park. Ph.D. Dissertation. Bozeman, MT: Montana State University. 196 p.
- Hensler, M.E. 1987. A field evaluation of four strains of Salmo introduced into seven Montana waters. M.Sc. Thesis. Bozeman, MT: Montana State University. 61 p.
- Hightower, T. and J. Vashro. 1987. ASARCo Rock Creek Project, baseline fisheries assessment. Report by Montana Department of Fish, Wildlife and Parks. 25 p.
- Hitchcock, R.W. 1988. Limitations to a rainbow trout population in north-central Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 131 p.
- Holton, G.D. 1952. A trout population study on a small creek in Gallatin County, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 46 p.
- Javorsky, L.D. 1984. The trout fishery on a reach of the upper Yellowstone River, Montana, during 1982. M.Sc. Thesis. Bozeman, MT: Montana State University. 45 p.
- Jeanes, E.D. 1996. Behavioral responses to water current of age-0 Arctic Grayling from the Madison River, and their use of stream habitat. M.Sc. Thesis. Bozeman, MT: Montana State University. 60p.
- Johnson, D.M., R.J. Behnke, D.A. Harpman, and R.G. Walsh. 1995. Economic benefits and costs of stocking catchable rainbow trout: a synthesis of economic analysis in Colorado. North American Journal of Fisheries Management 15:26-32.
- Johnson, J. H. 1985. Comparative diets of Paiute sculpin, speckled dace, and subyearling steelhead trout in tributaries of the Clearwater River, Idaho. Northwest Sci. 59:1-9.
- Johnson, R.L. 1962. The yield and standing crop of fish in Dailey Lake, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 25 p.
- Joslin, Gayle, and Heidi B. Youmans. 1999. Effects of recreation on Rocky Mountain wildlife: a review for Montana. [Montana]: Montana Chapter of the Wildlife Society.
- Kathrein, J.W. 1950. A partial fisheries survey of the Missouri River between Holter Dam and Cascade, Montana, with special emphasis on growth rate of trout and suckers. M.Sc. Thesis. Bozeman, MT: Montana State University. 27 p.
- Kenison, E.K. 2014. Predator-prey interactions between introduced trout and Long-Toed Salamanders and ways to mitigate noncomsumptive effects. M.Sc. Thesis. Bozeman, MT: Montana State University. 100 p.
- Kozakiewicz, V.J. 1979. The trout fishery of the lower Big Hole River, Montana, during 1977 and 1978. M.Sc. Thesis. Bozeman, MT: Montana State University. 74 p.
- Kraft, M.E. 1968. The effects of controlled dewatering on a trout stream. M.Sc. Thesis. Bozeman, MT: Montana State University. 31 p.
- Krueger, R.C. 2002. Correlations amoung environmental features, Myxobolus cerebralis infection prevalence in oliogochaetes, and salmonid infection risk in the Madison River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 73 p.
- Lance, M.J. 2019. Spatial and temporal variability in movements and vital rates of sympatric salmonids in an unfragmented, inland watershed. M.Sc. Thesis. Bozeman, MT: Montana State University. 116 p.
- Land & Water Consulting, Inc., Missoula, MT., 2002, Montana Dept. of Transportation Wetland Mitigation Monitoring Report, Year 2001: Big Spring Creek, Lewistown, Montana. Proj. No. 130091.029. July 2002. In 2001 Wetland Mitigation Monitoring Reports, Vol. I.
- Land & Water Consulting, Inc., Missoula, MT., 2002, Montana Dept. of Transportation Wetland Mitigation Monitoring Report, Year 2002: Big Spring Creek, Lewistown, Montana. Proj. No. 130091.029. February 2003. In 2002 Wetland Mitigation Monitoring Reports, Vol. I.
- Leary, R.F. and F.W. Allendorf. 1989. Genetic divergence among westslope cutthroat trout populations in the Blackfoot, Little Blackfoot, and Missouri River drainages. Missoula, MT: University of MT, Population Genetics Laboratory Report 89/1. 20 p.
- Leary, R.F., F.W. Allendorf, and K.L. Knudsen. 1989. Genetic differences among rainbow trout spawned on different days within a single season. The Progressive Fish-Culturist 51:10-19.
- Leary, R.F., F.W. Allendorf, and K.L. Knudsen. 1989. Genetic divergence among Yellowstone cutthroat trout populations in the Yellowstone River Drainage, Montana: update. Missoula, MT: Univ. of Montana, Population Genetics Laboratory Report 89/2. 22 p.
- Leary, R.F., F.W. Allendorf, S.R. Phelps, and K.L. Knudsen. 1984. Introgression between westslope cutthroat and rainbow trout in the Clark Fork River drainage, Montana. Proc. Montana Academy of Science 43:1-17.
- Leary, R.F., F.W. Allendorf, S.R. Phelps, and K.L. Knudsen. 1987. Genetic divergence and identification of seven cutthroat trout subspecies and rainbow trout. Transactions of the American Fisheries Society 116:580-587.
- Lere, M.E. 1982. The long term effectiveness of three types of stream improvement structures installed in Montana streams. M.Sc. Thesis. Bozeman, MT: Montana State University. 99 p.
- Lewis, S.L. 1967. Physical factors influencing fish populations in pools of a trout stream. M.Sc. Thesis. Bozeman, MT: Montana State University. 34 p.
- Liebelt, J. E. 1970. Studies on the behavior and life history of the Mountain Whitefish (Prosopium williamsoni Girard). Ph.D. Dissertation. Bozeman, Montana: Montana State University. 45 p.
- Liermann, B.W. 2001. An evaluation of the reintroduction of fluvial Arctic Grayling into the upper Ruby River. M.Sc. Thesis. Bozeman, MT: Montana State University. 91 p.
- Logan, S.M. 1961. Winter observations on trout and bottom organisms in Bridger Creek, southwestern Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 30 p.
- Lund, J.A. 1974. The reproduction of salmonids in the inlets of Elk Lake, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 43 p.
- Lyden, R.S. 1973. Fisherman use and fish harvest on the West Gallatin River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 34 p.
- Magee, J.P. 1993. A basin approach to characterizing spawning and fry rearing habitats for westslope cutthroat trout in a sediment-rich basin, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 89 p.
- Marcoux, R.G. 1969. Fish populations in Big Spring Creek, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University
- Marcus, M.D., M.K. Young, L.E. Noel and B.A. Mullan. 1990. Salmonid-habitat relationships in the western United States: a review and indexed bibliography. USFS General Tech. Report RM-188. 84 p.
- Mayfield, M.P. 2013. Limiting factors for trout populations in the upper Clark Fork River Superfund site, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 101 p.
- McClure, W.V. 1991. Initial effects of streambank stabilization on a small trout stream. M.Sc. Thesis. Bozeman, MT: Montana State University. 93 p.
- McCullough, A.R. 2017. Relations among Arctic Grayling, nonnative salmonids, and abiotic conditions in the Big Hole River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 143 p.
- McGinnis, S.A. 2007. An analysis of whirling disease risk in Western Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 108 p.
- McMichael, G.A. 1989. Effects of stream temperature on angling success for Rainbow and Brown Trout. M.Sc. Thesis. Bozeman, Montana: Montana State University. 130 p.
- Mogen, J.T. 1996. Status and biology of the spawning population of Red Rock Lakes Arctic grayling. M.Sc. Thesis. Bozeman, MT: Montana State University. 90 p.
- Montana Fish, Wildlife and Parks. 1989. Hauser Reservoir fisheries management plan: September 1989-September 1994. 16 p.
- Moran, S.S. 2001. Survey of habitat & fish communities in segments of Cherry Creek, a proposed site for re-introduction of Westslope Cutthroat Trout. M.Sc. Thesis. Bozeman, MT: Montana State University. 121 p.
- Mueller, M.E. 1985. Field evaluation of four strains of rainbow trout (Salmo gairdneri). M.Sc. Thesis. Bozeman, MT: Montana State University. 51 p.
- Mullins, M.S. 1991. Biology and predator use of cisco (Coregonus artedi) in Fort Peck Reservoir, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 68 p.
- Nelson, F.A. 1976. The effects of metals on trout populations in the Upper Boulder River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 60 p.
- Nelson, M.L. 1999. Evaluation of the potential for resident bull trout to reestablish the migratory life-form. M.Sc. Thesis. Bozeman, MT: Montana State University. 72 p.
- Nelson, P.H. 1953. Life history and management of the American Grayling (Thymallus signifer tricolor) in Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 45 p.
- Novak, M.A. 1988. Impacts of a fire-flood event on physical and biological characteristics of a small mountain stream. M.Sc. Thesis. Bozeman, MT: Montana State University. 98 p.
- Olenick, R.J., J.H. Gee. 1981. Tiger Salamanders (Ambystoma tigrinum) and stocked rainbow trout (Salmo gairdneri): potential competitors for food in Manitoba prairie pothole lakes. Canadian Field Naturalist 95(2): 129-132.
- Opitz, S.T. 1999. Effects of whirling disease on recruitment of brown trout in the Ruby River and Poindexter Slough, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 97 p.
- Penkal, R.F. 1977. Black bass populations of the Tongue River Reservoir, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 111 p.
- Peterson, N.W. 1970. The yield of wild and hatchery trout from Big Spring Creek, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 35 p.
- Pierce, B.E. 1963. Distribution of fish in a small mountain stream in relation to temperature. M.Sc. Thesis. Bozeman, MT: Montana State University. 16 p.
- Poole, A.S. 2019. Evaluation of embryo suppression methods for nonnative Lake Trout in Yellowstone Lake, Yellowstone National Park, Wyoming, USA. M.Sc. Thesis. Bozeman, MT: Montana State University. 108 p.
- Poore, M.D. 1973. The fishery resource of Mystic Lake, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 30 p.
- Posewitz, J.A. 1961. Observations on the fish population of Willow Creek reservoir, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 29 p.
- Purkett, C.A. Jr. 1950. A comparative growth rate of trout in relation to elevation and temperature. M.Sc. Thesis. Bozeman, MT: Montana State University. 33 p.
- Rahrer, J.F. 1963. Age and growth of four species of fish, Flathead Lake, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 16 p.
- Ramamoorthy, S. 1988. Effect of pH on speciation and toxicity of aluminum to rainbow trout (Salmo gairdneri). Canadian Journal of Fisheries and Aquatic Sciences 45:634-642.
- Randolph, C.L. 1984. Validity of the wetted-perimeter method for recommending instream flows for rainbow trout in a small stream. M.Sc. Thesis. Bozeman, MT: Montana State University. 95 p.
- Reiland, E.W. 1997. Fish loss to irrigation canals and methods to reduce these losses on the West Gallatin River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 170 p.
- Rich, C.F. 1996. Influence of abiotic and biotic factors on occurrence of resident Bull Trout in fragmented habitats, western Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 44 p.
- Ritter, T.J. 2015. Connectivity in a montane river basin: Salmonid use of a major tributary in the Smith River system. M.Sc. Thesis. Bozeman, MT: Montana State University. 120 p.
- Roberts, B.C. 1988. Potential influence of recreational use on Nelson Spring Creek, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 79 p.
- Ryce, E.K.N. 2003. Factors affecting the resistance of juvenile Rainbow Trout to whirling disease. Ph.D. Dissertation. 170 p.
- Sage, G.K. and R.F. Leary. 1990. Genetic analysis of trout populations in the Yellowstone, Gallatin, and Madison River Drainages, Montana. Missoula, MT: University of MT, Population Genetics Laboratory Report 90/1. 31 p.
- Sanborn, B.W. 1990. The ecology of Rainbow Trout in the Bighorn River, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 63 p.
- Sando, S.K. 1981. The spawning and rearing habitats of rainbow trout and brown trout in two rivers Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 67 p.
- Schoenthal, N.D. 1963. Some effects of DDT on cold water fish and fish-food organisms. Ph.D. Dissertation. Bozeman, MT: Montana State University. 47 p.
- Schrader, W.C. 1989. Trout mortality, movements, and habitat selection during the winter in South Willow Creek, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 89 p.
- Schultz, L.P. 1941. Fishes of Glacier National Park, Montana. USDI Conservation Bulletin No. 22. Washington D.C.: US Government Printing Office. 42 p.
- Sestrich, C.M. 2005. Changes in native and nonnative fish assemblages and habitat following wildfire in the Bitterroot River Basin, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 93 p.
- Sloat, M.R. 2001. Status of westslope cutthroat trout in the Madison River basin: the influence of dispersal barriers and stream temperature. M.Sc. Thesis. Bozeman, MT: Montana State University. 118 p.
- Smith, G. R. and R. F. Stearley. 1989. The classification and scientific names of rainbow and cutthroat trouts. Fisheries 14(1):4-10.
- Snelson, S.I. 1996. Responses of Rainbow (Oncorhynchus mykiss) and Brown Trout (Salmo trutta) to creation of access into a spawning tributary. M.Sc. Thesis. Bozeman, MT: Montana State University. 82 p.
- Solcz. A.A. 2007. Assessment of culvert passage of Yellowstone Cutthroat Trout in a Yellowstone River spawning tributary using a passive integrated transponder system. M.Sc. Thesis. Bozeman, Montana: Montana State University. 63 p.
- Spinelli, J.P. 2010. Spatial and temporal entrainment of fish from Hauser Reservoir, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 107 p.
- Spoon, R.L. 1985. Reproductive biology of Brown and Rainbow Trout below Hauser Dam, Missouri River, with reference to proposed hydroelectric peaking. M.Sc. Thesis. Bozeman, Montana: Montana State University. 144 p.
- Stangl, J. M. 1994. Effects of monitoring effort and recreation patterns on temporal and spatial activities of breeding Bald Eagles. M.Sc. Thesis. Bozeman, MT: Montana State University. . 74 p.
- Stash, S.W. 2001. Distribution, relative abundance, and habitat associations of Milk River fishes related to irrigation diversion dams. M.Sc. Thesis. Bozeman, MT: Montana State University. 82 p.
- Stefanich, F.A. 1951. The population and movement of fish in Prickley Pear Creek, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 42 p.
- Steinbach, L.C. 2003. Interactions among oligochaetes and a myxozoan parasite, Myxobolus cerebralis M.Sc. Thesis. Bozeman, MT: Montana State University. 69 p.
- Stevens, R.I. 2002. Invertebrate aspects of whirling disease. M.Sc. Thesis. Bozeman, MT: Montana State University. 51 p.
- Stevenson, H.R. 1975. The trout fishery of the Bighorn River below Yellowtail Dam, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 67 p.
- Streu, J.M. 1990. An evaluation of habitat improvement structures in the Boulder River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 54 p.
- Stringer, A.L. 2018. Status of Northern Pearl Dace and chrosomid dace in prairie streams of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 150 p.
- Sundeen, D.R. 1968. Abundance and movement of young trout in a portion of the Madison River, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 19 p.
- Sylvester, R. and B. Marotz. 2006. Evaluation of the Biological Effects of the Northwest Power Conservation Council's Mainstem Amendment on the Fisheries Upstream and Downstream of Hungry Horse and Libby Dams, Montana. Montana Fish, Wildlife, and Parks Annual Report prepared for U.S. Department of EnergyBonneville Power Administration. Bonneville Power Administration Project No. 2006-008-00 Contract No. 28350. 124 p.Contract No. 28350
- Sylvester, R. and B. Stephens. 2011. Evaluation of the physical and biological effects of the Northwest Power Conservation Council's Mainstem Amendment upstream and downstream of Libby Dam, Montana. Libby, MT: Montana Fish, Wildlife, and Parks Annual Report prepared for U.S. Department of Energy Bonneville Power Administration. Bonneville Power Administration Project No. 2006-008-00, Contract Nos. 43309 and 48555. 282 p.
- Sylvester, R. and B. Stephens. 2012. Evaluation of the physical and biological effects of the Northwest Power Conservation Council's Mainstem Amendment upstream and downstream of Libby Dam, Montana. Libby, MT: Montana Fish, Wildlife, and Parks Annual Report prepared for U.S. Department of Energy Bonneville Power Administration. Bonneville Power Administration Project No. 2006-008-00, Contract Nos. 48555 and 53910. 358 p.
- Sylvester, R., A. Steed, J. Tohtz, and B. Marotz. 2008. Evaluation of the Biological Effects of the Northwest Power Conservation Council's Mainstem Amendment on the Fisheries Upstream and Downstream of Hungry Horse and Libby Dams, Montana. Montana Fish, Wildlife, and Parks Annual Report prepared for U.S. Department of EnergyBonneville Power Administration. Bonneville Power Administration Project No. 2006-008-00 Contract No. 28350. 124 p.Contract No. 28350
- Sylvester, R.M. and B. Stephens. 2013. Mainstem Columbia Amendments Research at Libby Dam - Evaluation of the Physical and Biological Effects of the Northwest Power Conservation Council's Mainstem Amendment Upstream and Downstream of Libby Dam, Montana. Libby, MT: Montana Fish, Wildlife, and Parks Annual Report prepared for U.S. Department of Energy Bonneville Power Administration. Bonneville Power Administration Project No. 2006-008-00. 386 p.
- Sylvester, R.M., B.C. Stephens, and J.T. Frye. 2014. Mainstem Columbia Amendments Research at Libby Dam - Evaluation of the Physical and Biological Effects of the Northwest Power Conservation Council's Mainstem Amendment Upstream and Downstream of Libby Dam, Montana. Libby, MT: Montana Fish, Wildlife, and Parks Annual Report prepared for U.S. Department of Energy Bonneville Power Administration. Bonneville Power Administration Project No. 2006-008-00. 461 p.
- Sylvester, R.M., J.T. Frye, C.R. Gabreski, M.A. Webb, and H.C. Glassic. 2021. Kootenai River white sturgeon Acipenser transmontanus: 2009-2020 investigations in Montana. Montana Fish, Wildlife & Parks for the United States Fish & Wildlife Service Permit TE-210255-2. 87 p.
- Triano, B.L. 2020. Attraction, entrance, and passage efficiency of Arctic Grayling, trout, and suckers at Denil fishways in the Big Hole River basin, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 67 p.
- Underwood, T.J. and D.H. Bennett. 1992. Effects of fluctuating flows on the population dynamics of rainbow trout in the Spokane River of Idaho. Northwest Science 66(4):261-268.
- USDI Bureau of Land Management. No date. Fishes of the Miles city, Montana BLM District. Miles City, MT: Miles City BLM District pamphlet. 12 p.
- Vatland, S.J. 2015. Effects of stream temperature and climate change on fluvial arctic grayling and non-native salmonids in the Upper Big Hole River, Montana. Ph.D. Dissertation. Bozeman, MT: Montana State University. 119 p.
- Venditti, D.A. 1994. Diet overlap and habitat utilization of Rainbow Trout and juvenile Walleye in Cooney Reservoir, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 90 p.
- Watschke, D.A. 2006. Assessment of tributary potential for wild rainbow trout recruitment in Hebgen Reservoir, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 139 p.
- Weisel, G.F. 1966. Young salmonoid fishes of western Montana. Proceedings of the Montana Academy of Sciences 26:1-21.
- Williams, T.H. III. 1990. Habitat use by adult brown trout and rainbow trout in response to gas supersaturation downstream of the Yellowtail Afterbay Dam, Bighorn River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 123 p.
- Wipperman, A.H. 1963. Changes in trout population of a small Montana stream. M.Sc. Thesis. Bozeman, MT: Montana State University. 25 p.
- Wuellner, M.R. 2007. Influence of reach and watershed characteristics on fish distributions in small streams of eastern Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 80 p.
- Young, B.A., T.L. Welker, M.L. Wildhaber, C.R. Berry, and D. Scarnecchia (eds). 1997. Population structure and habitat use of benthic fishes along the Missouri and Lower Yellowstone Rivers. 1997 Annual report of Missouri River Benthic Fish Study PD-95-5832 to U.S. Army Corps of Engineers and U.S. Bureau of Reclamation. 207 p.
- Zackheim, K. 1973. Exhibit H: Wildlife Study. In Ash Grove Cement Co. files.
- Zollweg, E.C. 1998. Piscine predation on bull trout in the Flathead River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 97 p.
- Zymonas, N.D. 2006. Age structure, growth, and factors affecting relative abundance of life history forms of Bull Trout in the Clark Fork river drainage, Montana and Idaho. M.Sc. Thesis. Bozeman, MT: Montana State University. 142 p.
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