Revised 17 Nov. 2025
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Percopsis Agassiz 1849 perc-, from pérkē (πέρκη), perch; ópsis (ὄψις), appearance, i.e., perch-like, with the adipose fin of a salmon and the jaws and ctenoid scales of a perch; Agassiz later (1850) stated that he believed the genus was intermediate between Salmonidae and percoids

Percopsis omiscomaycus (Walbaum 1792) Latinization of Omisco Maycus, reportedly the Algonquin Indian name for this species, with “Maycus” possibly being the root word for “trout” (note similarity to the reportedly Cree Indian name for the Lake Trout, Salvelinus namaycush)

Percopsis transmontana (Eigenmann & Eigenmann 1892) trans (L.), over or beyond; montana (L.), pertaining to mountains, referring to its distribution west of the Rocky Mountains (Idaho, Washington and Oregon, USA)