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A new cottid species, Icelus sekii (Perciformes: Cottoidei) from Hokkaido, Japan

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Title: A new cottid species, Icelus sekii (Perciformes: Cottoidei) from Hokkaido, Japan
Authors: Tsuruoka, Osamu Browse this author
Munehara, Hiroyuki Browse this author
Yabe, Mamoru Browse this author →KAKEN DB
Keywords: Perciformes
Cottidae
New species
Icelus sekii
Japan
Issue Date: Feb-2006
Publisher: Springer Tokyo
Journal Title: Ichthyological Research
Volume: 53
Issue: 1
Start Page: 47
End Page: 51
Publisher DOI: 10.1007/s10228-005-0314-2
Abstract: A new cottid species, Icelus sekii, is described on the basis of six specimens collected from off Rausu and Urakawa, Hokkaido Island, Japan. This species is distinguished from its congeners by the following combination of characters: supraocular and parietal spines absent; nuchal spine obscure; uppermost preopercular spine unbranched; no scales between dorsal scale row and lateral-line scale row, and no scales below lateral-line scale row; supraocular, parietal, and nuchal cirri present; five dark brown saddles dorsolaterally; anal-fin rays 13; pectoral-fin rays 15; vertebrae 12 + 24~5 = 36~7. Icelus sekii can be mature at the smallest size among the species of Icelus. As a secondary sexual character, the male holotype has unique ensiform flaps on the distal tips of the first dorsal fin.
Rights: The original publication is available at www.springerlink.com
Type: article (author version)
URI: http://hdl.handle.net/2115/8294
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鶴岡 理

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