Revision of the Eelpout Genus Derjuginia

Abstract

Two rare zoarcids, Derjuginia ochotensis and Gengea japonica, are reported from the Okhotsk and Japan Seas.They are separable by dorsal rays (98 110 vs.90-94, respectively) and the relative position of the dorsal fin origin (advanced with anal origin below dorsal rays 7 10 vs.more posterior with anal origin below dorsal rays 1 N 3, respectively). Gengea is considered a synonym of Derjuginia.