ABSTRACT

A large number of works have been published in recent years on the suborder Gobioidei. Five subfamilies and nearly 50 genera reported from the Sea of Japan. Differs from C. fontanesi, recorded off Kagoshima, as well as other Japanese species of this genus in fewer number of rays in second dorsal fin and anal fin. Some explanation is required with regard to the genus Gymnogobius. It has been listed among the synonyms of Chaenogobius Gill, 1859, the type species of which is Chaenogobius annularis Gill. Pelvic fins exceptionally absent in the genus Expedio. Seven genera, mostly found along the shores of China and Japan. Characters given in description of genus and in key to genera. Description given in characters of genus and in key to genera. Characters of this only species found in the Sea of Japan and near Japan given in description of family and genus.