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

Percidae

River Darter

Percina shumardi (Girard), the river darter, was listed as Etheostoma guntheri by Woolman (1896), who collected it from the Red, Sheyenne, and Red Lake Rivers where it was rare to common in the samples (Figure A74). Hankinson (1928) listed Imostoma shumardi from the Red River at Pembina, where only one specimen was taken; and Olson (1932) reported it from the Red Lake River below Crookston, where two specimens were taken. The river darter has been collected from the Buffalo, Red Lake, Middle, and Roseau Rivers. The species has been extremely rare in the basin, having been collected at only 2% of stream sites sampled since 1962 (Table 4). It has occurred at 10% of the sites sampled in the NMW ecoregion. The river darter has evidently been extirpated from the Red and Sheyenne Rivers and has never occurred in other western basin tributaries.

Figure A74. Distribution of the river darter in streams of the Red River of the North basin.

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