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

Catostomidae

Silver Redhorse

Moxostoma anisurum (Rafinesque), the silver redhorse, was not collected by early investigators in the Red River basin, but Eddy et al. (1972) listed it as common in the commercial catch in the Red Lakes. The first stream site record from the Red River basin was from the Pelican River in 1974 by BMNH (1994). The species has been most common in the Red and Otter Tail Rivers (Figure A13), and it has occurred at 14% of the stream sites sampled in the Red River basin since 1962 (Table 4), with site collections typically containing 6-12 individuals. Aside from a single specimen collected from the Red Lake River near the mouth of the Clearwater River in 1994, the species has not been found in that drainage since 1976.

Figure A13. Distribution of the silver redhorse in streams of the Red River of the North basin.

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