Bull. Natl. Mus. Nat. Sci., Ser. A, Suppl. 6, pp. 59–65, March 30, 2012 Gobiodon winterbottomi, a New Goby (Actinopterygii: Perciformes: Gobiidae) from Iriomote-jima Island, the Ryukyu Islands, Japan Toshiyuki Suzuki1, Korechika Yano2 and Hiroshi Senou3 1 Kawanishi-midoridai Senior High School, 1–8 Kouyoudai, Kawanishi, Hyogo 666–0115, Japan E-mail:
[email protected] 2 Dive Service Yano, 537 Uehara, Taketomi-cho, Okinawa 907–1541, Japan 3 Kanagawa Prefectural Museum of Natural History, 499 Iryuda, Odawara, Kanagawa 250–0031, Japan E-mail:
[email protected] Abstract The gobiid ¿sh Gobiodon winterbottomi is described as a new species from three spec- imens (19.0–32.9 mm SL) collected from Echinopora lamellose, the plate-shaped coral of the fam- ily Faviidae, in 5 m depth on the reef slope off Iriomote-jima Island, the Ryukyu Islands, Japan. It is characterized by the following in combination: the jaw teeth subequal in shape and size; lack of post-symphysial canine teeth; lack of an interopercle-isthmus groove; a narrow gill opening; lack of elongated dorsal-¿n spines; large second dorsal, anal and pelvic ¿ns; 15 or 16 pectoral-¿n rays; and head, body and ¿ns gray, absence of stripes or other markings when fresh or alive. Key words: Gobiodon winterbottomi, new species, Gobiidae, Ryukyu Islands, Japan. Gobiodon Bleeker, 1856 is an Indo-Paci¿c Sawada and Arai, 1972 (validity questionable), gobiid ¿sh genus, comprising often colorful, Gobiodon axillaris De Viz, 1884, Gobiodon bro- tropical species living in obligate commensal chus (Harold and Winterbottom, 1999), Gobio- association with reef-building corals.