54423 Gobiomorus polylepis Ginsburg, 1953 Eleotridae Bully sleepers Gobiiformes Teleostei Finescale sleeper Eastern Central Pacific: rivers near Tepic, Mexico, to the Rio Copalita near Puerto Angel in the south of Mexico, Pacific drainage. From the Río Pozo Salado, Playa Naranjo to the Río Jicote, near Loma, Costa Rica (Ref. 36880).