Abstract
Eighty-four specimens of a gobiid fish, Paleatogohius uchidai Takagi, were collected in Usu Bay (42° 30'N, 140°45'E), Hokkaido in 1980, Since this species has been known only from Kyushu district, the collections from Usu Bay are a new record for Hokkaido, which is far north of the localities previously recorded.The presence of some common environmental factors for the type locality and Usu Bay, as well as the occurrence of mature females and many juveniles in August, suggests that this species. breeds in Usu Bay.
