Abstract
A new glyptosternine catfish, Creteuchiloglanis arunachalensis is described on the basis of a single specimen collected from the upper Brahmaputra River drainage, northeastern India. The new species is distinguished from its congeners by the following characters: shorter adipose-fin base (25.9 vs. 26.2–37.3 % standard length; SL) except C. longipectoralis; shorter maxillary barbel (71.2 vs. 75.2–99.8 % head length) except C. macropterus; and longer prepelvic (45.4 vs. 36.4–44.9 % SL) except C. brachypterus. It can be further differentiated by a combination of the following characters: pectoral fin not reaching pelvic-fin origin; pelvic fin not reaching at vertical through adipose-fin origin; pale patches on body except occipital region; absence of milky-white patch on the base of posterior end of maxillary barbel; longer post adipose distance (10.1 % SL); tip of rectal lobe obtusely rounded; caudal-fin lobes equal; posterior margin of caudal fin slightly convex; adipose-fin separate from caudal fin; and caudal fin with broad bean-shaped medial band.
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Acknowledgements
The authors are grateful to Dr. K. Venkataraman, Director, Zoological Survey of India, Kolkata for infrastructure facilities. We are thankful to H. H. Ng of National University of Singapore for permission to reproduce the images (caudal fin) of holotypes of C. macropterus and C. kamengensis. The authors also thank the anonymous reviewers for their critical comments on the original manuscript. The authors are also thankful to Dr. K. C. Gopi for editing the English of the text. This study was conducted in compliance with the current Indian laws related to this research work.
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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as 87FAA114-87FF-450B-B453-E3469DE9FD02.
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Sinha, B., Tamang, L. Creteuchiloglanis arunachalensis, a new species of glyptosternine catfish (Teleostei: Sisoridae) from Arunachal Pradesh, northeastern India. Ichthyol Res 62, 189–196 (2015). https://doi.org/10.1007/s10228-014-0425-8
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DOI: https://doi.org/10.1007/s10228-014-0425-8