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Grammonus yunokawai (Ophidiiformes: Bythitidae), a new marine cavefish from the Ryukyu Islands

Authors :
Jørgen G. Nielsen
Source :
Ichthyological Research. 54:374-379
Publication Year :
2007
Publisher :
Springer Science and Business Media LLC, 2007.

Abstract

A new species of the fish genus Grammonus (Ophidiiformes: Bythitidae) is described based on a ripe female, 98 mm in standard length (SL). It was caught at the bottom of a cave at a depth of 20 m under lightless conditions in Ie-shima Island, one of the Ryukyu Islands. A comparison to the seven described species of Grammonus shows the greatest similarity to the widely distributed G. robustus, but G. yunokawai n. sp. differs from it by having fewer vertebrae (41 vs. 44–47), a greater predorsal length (41.5 vs. 32.0–39.0% SL), higher posterior margin of maxilla (8.4 vs. 5.6–7.3% SL), and greater interorbital width (10.5 vs. 5.9–7.6% SL).

Details

ISSN :
16163915 and 13418998
Volume :
54
Database :
OpenAIRE
Journal :
Ichthyological Research
Accession number :
edsair.doi...........65bfc4f890faae943942ad1effcdae2c