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

The Distribution of Stream Fish Species


Using information from 1026 sites sampled in the basin from 1892-1994, the IDRISI GIS produced a distribution map for each of 79 fish species (Figures A1-A79). The white sucker (Catostomus commersoni) was the most common species, having been found at 60% of stream sites sampled from 1962-1994 (Table 4). Also relatively common were the fathead minnow (Pimephales promelas), the common shiner (Notropis cornutus), the northern pike (Esox lucius), and the johnny darter (Etheostoma nigrum), found at 53%, 47%, 39%, and 39% of the sites, respectively. The most rarely occurring species in the basin included the largescale stoneroller (Campostoma oligolepis), pugnose shiner (Notropis anogenus), flathead chub (Platygobio gracilis), and the mottled sculpin (Cottus bairdi), all found at <1.0% of sites.

Species


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