Percopsis

Percopsis omiscomaycus

The perch salmon ( Percopsidae ( gr perke = perch, ops = similar) ) are a family of small North American freshwater fish, the only one extant genus ( Percopsis ) consists of two types. The fish are similar to the gudgeon, but are not related to this.

Features

Perch salmon have both Crest and roundhouse. The head is scaleless, the vomer toothless. The pelvic fins sit far down on the body. An adipose fin is present. The lateral line is completely or almost completely.

Fins formula: Dorsal I-II/9-12, Anal I-II/6-7, Ventral 8

Species

  • Percopsis omiscomaycus ( Walbaum, 1792) lives which drain into the Arctic Ocean and the Atlantic Ocean in North America in rivers. In the eastern U.S., he comes south to the Potomac River in Virginia before. Also in the Yukon River in Alaska, the Great Lakes and in the basin of the Mississippi River; 20 inches long.
  • Percopsis trans montana ( Eigenmann & Eigenmann, 1892 ) lives endemic in the catchment area of the Columbia River in Idaho, Washington and Oregon; 9.6 inches long.

Phylogeny

The perch salmon are detected with the extinct genera Amphiplaga, Erismatopterus, Lateopisculus and Massamorichthys fossil from the Eocene 50 million years ago.

Acanthomorpha Percopsiformes Fish fin Johann Julius Walbaum Carl H. Eigenmann Washington (state) FishBase
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