A new species of amphidromous goby, Stiphodon alcedo, from the Ryukyu Archipelago (Gobiidae: Sicydiinae )

Maeda K., Mukai T., Tachihara K.

Published date: December 2011
Volume: 35
Number: 4
Pagination: 285–298
Publisher: Société Française d’Ichtyologie
doi: https://doi.org/10.26028/cybium/2011-354-003

A new goby species, Stiphodon alcedo , is described from 27 specimens collected in Okinawa and iriomote islands of the ryukyu archipelago, Japan. This species can be distinguished from its congeners by having a pointed, but not filamentous, first dorsal fin in males, nine soft-rays in the second dorsal fin, 15-17 rays in the pectoral fin, the number of teeth, and unique sexually dimorphic colouration. The new species is considered to have recently colonised the islands where it has established small populations, and is considered to have originated from regions to the south of the archipela - go, with larvae occasionally being transported northward by the Kuroshio current.

Keywords: Amphidromy - Kuroshio Current - Larval dispersal - New species - Ryukyu Archipelago - Stiphodon
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