Definition of Percidae
: a family of vigorous active percoid fishes that is now usually restricted to freshwater forms of the northern hemisphere including the true perches, pike perches, and a few related forms (as the zingel) but that formerly also included the sand darters or was sometimes made nearly coextensive with Percoidea — see perca
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Origin and Etymology of percidae
New Latin, from Perca, type genus + -idae
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