First Record of the Helmet Gurnard, Dactyloptena tiltoni (Osteichthyes : Dactylopteridae), from Japan with Comments on Newly-recognized Characters

抄録

Eighteen specimens of the helmet gurnard, Dactyloptena tiltoni Eschmeyer, 1997, collected from Tosa Bay, represent the first record of the species from Japan. A redescription of the species is given. Most specimens from Tosa Bay are larger than the types. The lateral line condition, including tubules covered by body scales, and fresh coloration are described for the first time.