Hemimyzon papilio Kottelat, 1998
Hemimyzon papilio
photo by Vidthayanon, C.

Family:  Balitoridae (River loaches)
Max. size:  5.92 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: Mekong basin in Laos, Cambodia and Viet Nam (including Dong Nai basin).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 11-11; Anal spines: 0-0; Anal soft rays: 8-8. Pectoral fins with 10-12 simple and 10-13 branched rays; pelvic fins with 3-4 simple and 9-11 branched rays; origin of last pelvic rays 9.2-11.2% SL (Ref. 27732); distance between bases of last pelvic rays 2.2-2.4 times in body width at pectoral-fin origin (Ref. 42935).
Biology:  Occurs in rapids and fast flowing water, under large stones (Ref. 43281).
IUCN Red List Status: Least Concern (LC); Date assessed: 18 February 2011 Ref. (130435)
Threat to humans:  harmless


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