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Distribution of Fishes in the Red River of the North Basin on Multivariate Environmental Gradients

Ictaluridae

Tadpole Madtom

Noturus gyrinus (Mitchill), the tadpole madtom, was reported by Kennicott from the "North Red River" and the Maple River in 1857 (SI 1994). Woolman (1896) collected it from the Red, Goose, Maple, and Sheyenne Rivers; Hankinson (1928) listed Schilbeodes gyrinus from the Red River, where it was apparently common; and Olson (1932) collected four specimens from the Red Lake River below Crookston (Figure A51). The tadpole madtom has been taken primarily from the Forest, Turtle, Goose, Maple, Sheyenne, Otter Tail, and South Branch Buffalo Rivers and the Wild Rice River in North Dakota. It has been a common species in the basin, having been collected at 19% of the stream sites sampled since 1962 (Table 4). The tadpole madtom has been most abundant in site collections from the Sheyenne River, where over 100 specimens were taken at a site west of Pekin.

Figure A51. Distribution of the tadpole madtom in streams of the Red River of the North basin.

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