plural noun
Sal·​mo·​per·​cae | \ˌsalmōˈpərˌsē, -rˌkē, -rˌkī\

Definition of Salmopercae 

: a small order that comprises North American freshwater fishes in some respects intermediate between the Ostariophysi and the Percomorphi and includes the pirate perch and the trout-perches

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History and Etymology for Salmopercae

New Latin, from Latin salmo salmon + percae, plural of perca perch

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