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Silurus asotus : ウィキペディア英語版 | Amur catfish
The Amur catfish, or Japanese common catfish, ''Silurus asotus'',〔(ITIS (gov) )〕 is a species of catfish (sheatfish), family Siluridae. It is a large freshwater fish found in continental East Asia and in Japan. It prefers slow-flowing rivers, lakes, and irrigation canals. Its appearance is typical of a large silurid catfish. Larval ''S. asotus'' specimens have three pairs of barbels (one maxillary, two mandibular), while adult fish have only two pairs (one maxillary, one mandibular); second pair of mandibular barbels degenerates.〔("Relationship between external and internal morphological changes and feeding habits in the fry state of Japanese Catfish ''Silurius Asotus''" ), 1999, Osamu Yada and Atsushi Furukawa, UJNR Aquaculture 28th Panel Proceedings〕 This species grows to in total length. ==References==
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