perch n. [Written also pearch.]  Zool.
 1. Any fresh-water fish of the genus Perca and of several other allied genera of the family Percidæ, as the common American or yellow perch (Perca flavescens syn. Perca Americana), and the European perch (Perca fluviatilis).
 2. Any one of numerous species of spiny-finned fishes belonging to the Percidæ, Serranidæ, and related families, and resembling, more or less, the true perches.
 Black perch. (a) The black bass. (b) The flasher. (c) The sea bass.
 Blue perch, the cunner.
 Gray perch, the fresh-water drum.
 Red perch, the rosefish.
 Red-bellied perch, the long-eared pondfish.
 Perch pest, a small crustacean, parasitic in the mouth of the perch.
 Silver perch, the yellowtail.
 Stone perch, or Striped perch, the pope.
 White perch, the Roccus Americanus, or Morone Americanus, a small silvery serranoid market fish of the Atlantic coast.
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 Sea bass. Zool. (a) A large marine food fish (Serranus atrarius syn. Centropristis atrarius) which abounds on the Atlantic coast of the United States.  It is dark bluish, with black bands, and more or less varied with small white spots and blotches.  Called also, locally, blue bass, black sea bass, blackfish, bluefish, and black perch. (b) A California food fish (Cynoscion nobile); -- called also white sea bass, and sea salmon.
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 Tri·ple-tail n. Zool. An edible fish (Lobotes Surinamensis) found in the warmer parts of all the oceans, and common on the southern and middle coasts of the United States. When living it is silvery gray, and becomes brown or blackish when dead. Its dorsal and anal fins are long, and extend back on each side of the tail. It has large silvery scales which are used in the manufacture of fancy work. Called also, locally, black perch, grouper, and flasher.
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