Described by Herre from specimens taken from Siwagat River, a stream in the mountains east of Lake Lanao; Lake Uyaan; Lake Nunuñgan, Cotabato; and from an outlet of Lake Dapao, Lanao del Sur. Also occurs in Butig, Lanao (Ref. 2929, 13446, 70969). Recorded in a 1982 survey (Ref. 12758), 1963-64, 1973-77, 1982-83, 1990-91 and 2008 surveys (Ref. 95183). In the 1990-91 survey, 292 kg were recorded. Caught mainly with fish pots, hook and line, and hand fishing (Ref. 13448). A number of specimens were collected during the 1994 expedition (Ref. 10888). Also Ref. 94476.