Central mudminnow - Umbra limi
Mudminnows are small, robust fishes with soft-rayed fins. The dorsal fin is set well back toward the tail, and the tail fin is rounded. The Central Mudminnow is the only Montana species and has a black bar at the base of the tail fin. Unauthorized introductions into Montana.
Overall dark colored; olive brown to brown-black above, sides mottled with dark brown or may have as many as 14 irregular dark vertical bars. Underside white to yellowish. Head broad, lateral line absent. Male's anal fin long, almost reaches base of tail fin; female's anal fin does not reach base of tail fin.
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Small ponds, slow moving streams and marshes. Usually associated with vegetation, organic debris and mud.
Very hardy. Can withstand water temperature extremes and comparatively high acidity. When oxygen in water insufficient, can gulp air at surface and use atmospheric oxygen. Therefore, tolerates stagnant conditions.
Unauthorized introductions into Montana.
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