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Pumpkinseed - Lepomis gibbosus
General Description
The pumpkinseed is Montana's most widespread small sunfish, but like the others it has been introduced. Pumpkinseeds were first found here in 1910 in sloughs near Kalispell and now are found nearly statewide except for southwestern Montana. Pumpkinseeds are beautiful little fish, and in their preferred habitat of clear ponds with abundant aquatic vegetation they can grow up to 1 pound and provide some fun fishing. However, most populations are stunted. The pumpkinseed is another example of a fish which has become widespread through illegal introduction.
Diagnostic Characteristics
Gill rakers short and stubby.
Species Range
Montana Range
Non-native
Observations in Montana Natural Heritage Program Database
Number of Observations: 675
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Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Habitat
Ponds, small lakes, some large lakes, and slow streams. Prefers quite, clear water with an abundance of aquatic vegetation submerged brush.
Food Habits
Mostly snails and aquatic insects; but almost any organism of suitable size is eaten on occasion.
Ecology
May cross with bluegill and green sunfish but no hybrids reported in Montana.
Reproductive Characteristics
Sexually mature in 2-3 years. Spawns late spring-early summer.
References
- Additional ReferencesLegend:
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Penkal, R.F. 1977. Black bass populations of the Tongue River Reservoir, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 111 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.
- 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., 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
- Workman, D.L. 1970. A comparison of fish population estimates for two pothole lakes in Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 26 p.
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