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Published: 2022-03-28

Mystus irulu, a new species of bagrid catfish from the Western Ghats of Karnataka, India (Teleostei: Bagridae)

A1101, Synchronicity CHS, Lok Milan Colony, Chandivali, Mumbai, Maharashtra, India—400072.
Indian Council of Agricultural Research—Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India—744101.
pisces Siluriformes Bagridae Western Ghats Netravathi River Karnataka


Mystus irulu, new species, is described from the Netravathi River system from the Western Ghats of Karnataka. It differs all South Asian congeners in having a uniformly black colour pattern, a long-based adipose fin reaching the base of the last dorsal-fin ray anteriorly, dorsal fin with convex dorsoposterior margin, and the following combination of characters: body depth at anus 19.9–22.3 % SL, dorsal-fin spine length 17.5–18.7 % SL, adipose-fin base 34.2–38.4 % SL, caudal peduncle depth 10.6–11.9 % SL and eye diameter 27.2–37.1 % HL.



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