Xiphasia matsubarai, the Japanese snake blenny, is a species of combtooth blenny found in the western Pacific and Indian oceans just extending into the Atlantic Ocean in False Bay, South Africa. This species can be found at depths ranging from the surface to 4,960 m (16,270 ft). This species reaches 30 cm (12 in) in SL. This species feeds primarily on bony fish. It can also be found in the aquarium trade.