15886 Tridentiger obscurus (Temminck & Schlegel, 1845) Gobiidae Gobies Gobionellinae Gobiiformes Teleostei Dusky tripletooth goby Asia: Korean Peninsula and Japan. Reported from Sakhalin and Iturup Island, Russian Federation (Ref. 26334). AMNH 13236 Tridentiger obscurus AMNH 13237 Tridentiger obscurus AMNH 13238 Tridentiger obscurus AMNH 26875 Tridentiger obscurus AMNH 26876 Tridentiger obscurus AMNH 34776 Tridentiger obscurus FB 2741881 Sicydium obscurum AMNH 13239 1922 Tridentiger obscurus