Hypsagonus corniger is a fish in the family Agonidae (poachers). It was described by Anatoly Yakovlevich Taranetz in 1933. It is a marine, polar water-dwelling fish which is known from the southern Okhotsk Sea and the northern Sea of Japan, in the northwestern Pacific Ocean. It dwells at a depth range of 18 to 105 metres (59 to 344 ft). Males can reach a maximum total length of 10 centimetres (3.9 in).