The cat ® shes (Teleostei: Siluriformes) of central Sumatra Author Ng, H. H. Tan H. H. text Journal of Natural History 2000 34 267 303 journal article 1464-5262 Akysis heterurus Ng, 1996 Akysis heterurus H. H. Ng, 1996: 4 ( type locality: Sungai Alai , Sumatra ). Material examined. BATANG HARI DRAINAGE : ZRC 34194 (1) , holotype , 18.9 mm SL. ZRC 39248 (7) , paratypes , 18.4±26.1 mm SL. CMK 12199 (1), paratype , 21.1 mm SL . MZB 6209 (1) , paratype , 25.4 mm SL. ZRC 42309 (2) , 20.9, 25.9 mm SL.