Abstract
Specimens of a new genus and species of the stichaeid fish, Leptostichaeus pumilus, were collected from the Okhotsk Sea off Hokkaido in Japan.The present new genus and species clearly differs from all the other genera and species of the stichaeid fishes in the following characters: 3 or 4 pectoral fin rays;10 or fewer caudal principal rays;79-82 dorsal spines;no pelvic fin; last interneural spine supporting a single dorsal spine;infraorbital, occipital and lateral line canals absent;moderate size of dorsal spine shorter than eye diameter;membranes of dorsal and anal fins widely connected with caudal fin;a large black spot divided by a yellow band present just above gill cover.
