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Cobitis sakahoko, a new species of spined loach (Cypriniformes: Cobitidae) from southern Kyushu Island, Japan

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Abstract

We describe a new species of spined loach, Cobitis sakahoko, based on the holotype and nine paratypes collected from the Oyodo River system in the southern region of Kyushu Island, Japan. This species is distinguished from its congeners by the following combination of characteristics: lamina circularis at the base of the pectoral fin in adult males, a rectangular plate with a neck in the mid-lower part; the upper segments of the first branched soft ray of the pectoral fin broad; snout relatively short, length 32.1–38.2% of head length; long maxillary barbel, longer than the eye diameter; prepelvic myotome number 14; and line L5 organised in 8–13 oblong or ovoid blotches.

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Acknowledgments

We thank S. Toosaki, T. Iwasaki and M. Inamitsu for support in sample collection and Y. Kimizuka and M. Watanabe for their invaluable information. We are obliged to H. Senou (KPM) and Y. Sato (TKPM) for the donation of specimens, A. Tawa (Kyushu University) for taking the X-ray photographs, R. Uchiyama (Nature Photographer) for providing a valuable photograph, and the handling editor for giving helpful comments. This study was partly supported by Grants-in-Aid for JSPS Fellows (No. 08J02830).

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Authors and Affiliations

  1. Fukuoka Institute of Health and Environmental Sciences, Mukaizano 39, Dazaifu, Fukuoka, 818-0135, Japan

    Jun Nakajima

  2. Institute of River Biology, Inc., Hinosato 9-17-14, Munakata, Fukuoka, 811-3425, Japan

    Yuzuru Suzawa

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  1. Jun Nakajima
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  2. Yuzuru Suzawa
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Correspondence to Jun Nakajima.

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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as E0BF37D0-ED0D-4EF7-AF51-C93DE7A866DB.

This article was published as an Online First article on the online publication date shown on this page. The article should be cited by using the doi number.

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Nakajima, J., Suzawa, Y. Cobitis sakahoko, a new species of spined loach (Cypriniformes: Cobitidae) from southern Kyushu Island, Japan. Ichthyol Res 63, 68–78 (2016). https://doi.org/10.1007/s10228-015-0476-5

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  • DOI: https://doi.org/10.1007/s10228-015-0476-5

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