ABSTRACT
Dorsal and anal fins without spiny rays, and even without thin flexible rays. Dorsal fin long, with large number of soft unbranched rays, originates above pectoral fin and continues almost up to base of caudal fin, but not confluent with it. An examination of specimens from the Sea of Okhotsk and the Sea of Japan off the south coast of Sakhalin and from Obama and the Yellow Sea, showed that the lateral line originates in them above the operculum, and the number of folds. CLVII Differs from other families of the suborder Ammodytoidei in short dorsal fin, length of which is equal to length of anal fin; two fins similar in shape and position; anterior rays of both fins much higher than posterior rays. In the Sea of Okhotsk the authors confirmed its occurrence in Aniva Bay and near Cape Korsakov.
