Ichthyological Research

, Volume 61, Issue 2, pp 99–107 | Cite as

Stiphodon niraikanaiensis, a new species of sicydiine goby from Okinawa Island (Gobiidae: Sicydiinae)

  • Ken Maeda
Full Paper


A new goby species, Stiphodon niraikanaiensis, is described on the basis of three specimens (two females and one male) collected from a freshwater stream in Okinawa Island, Japan. This species can be distinguished from its congeners by nine soft rays in the second dorsal fin, 16 rays in the pectoral fin, a pointed first dorsal fin in male, the premaxilla with 46–50 tricuspid teeth in 27–36 mm SL; no white patch behind the pectoral-fin base in male, the nape and posterior half of the occipital region covered by cycloid scales, broad black band along the distal margin of the second dorsal fin in male, 11 or 12 dusky transverse bars laterally on the trunk and tail of female intersecting with the mid-lateral longitudinal band, several conspicuous black spots on each spine and soft ray on the first and second dorsal fins of female, the anal fin of female lacking remarkable marking, and the pectoral-fin rays with 2–5 and 1–4 black spots, respectively, for male and female. The new species is known only from the type locality.


Stiphodon New species Ryukyu Archipelago Dispersal 



I am grateful to Toshifumi Saeki (Rivus, Okinawa), Yoshihiko Yamamoto (Research Institute of Environment, Agriculture and Fisheries, Osaka Prefecture), and Naofumi Murata (Nago Museum, Okinawa) for the important information on the new species and assistance with the study. I also appreciate the excellent underwater photographs provided by T. Saeki and Y. Yamamoto. I am also grateful to Tilman J. Alpermann (SMF), David Catania (CAS), Kiyotaka Hatooka (OMNH), Yuji Ikeda (BLIH), Maurice Kottelat (Cornol, Switzerland), Kelvin K. P. Lim, Heok Hui Tan (ZRC), Gento Shinohara (NSMT), Toshiyuki Suzuki (Kawanishi-midoridai High School, Hyogo, Japan), and all of the museum staff who supported our investigation in the museums and the specimen registration, loaned us the specimens, or provided information about the specimens. I wish to thank Steven D. Aird (OIST) for useful suggestions to improve the manuscript, Katsunori Tachihara (University of the Ryukyus), Tetsuo Yoshino (General Research Center of Okinawa Churashima Foundation, Okinawa), Nori Satoh, and all lab members of Marine Genomics Unit (OIST) for their kind support to this study. This study was supported by JSPS KAKENHI Grant Number 24780200.


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Copyright information

© The Ichthyological Society of Japan 2013

Authors and Affiliations

  1. 1.Marine Genomics UnitOkinawa Institute of Science and Technology Graduate University (OIST)OnnaJapan

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