Comephorus


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Comephorus

 

the only genus offish of the Comephoridae family of the Percomorphi order. The body is bare and of a delicate rose color. There are no abdominal fins, and the pectoral fins are very long. There are two species, both living only in Lake Baikal. The Baikal oil-fish (C. baicalensis) may be as much as 19 cm long and is very fatty; it generally keeps to the middle depths of the lake and is never found deeper than 800 m. The lesser Baikal oil-fish (C. dybowskii) reaches 15 cm in length and stays mainly in depths of 250–500 m; at night it is found at 50–100 m and near the surface; sometimes it goes as deep as 1 km. Both species of Comephorus are viviparous. They are characterized by an extremely small number of males. (Among the Baikal oil-fish only 3 percent are males; among the lesser Baikal oil-fish, 12–20 percent are males.) In both species the females are larger than the males. The fish have no commercial importance.

References in periodicals archive ?
and above all the golomyankas or Baikal oilfish (the two species Comephorus baicalensis and C.
339) are remarkable fish endemic to Lake Baikal, and are the only species of the genus Comephorus, which is the only genus in the family Comephoridae (order Scorpaeniformes).