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Etheostoma

Fish
Etheostoma is a genus of small freshwater fish in the family Percidae native to North America. Most are restricted to the United States, but species are also found in Canada and Mexico. They are commonly known as darters, although the term... Wikipedia
Higher classification: Percidae
Scientific name: Etheostoma
Rank: Genus
Genus: Etheostoma; Rafinesque, 1819