Young Iowa darters feed chiefly on entomostracans, and larger organisms are taken by larger fish. The diet also increases in complexity with increasing age and older individuals feed on amphipods, midge larvae, and other insect larvae. This is a glacial species that appears to be holding its own in New York. Distribution of iowa darters in NY state. Dark dots represent where actual samples of iowa darters were taken.
White dots represent historic distributions.
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