Schistura irregularis Kottelat, 2000

Family:  Nemacheilidae (Brook loaches)
Max. size:  8.6 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: Nam Khan of the Mekong basin in Laos.
Diagnosis:  Anterior nostril pierced on front side of a flap; processus dentiformis present; no median notch in upper lip, lower lip with median incision; lower jaw with median notch; low dorsal keel along caudal peduncle; body depth 17.4-18.8 %SL; caudal peduncle length 16.8-18.1 %SL, depth 12.5-15.0 %SL, 1.20-1.38 times in length; lateral line complete; anus about 1-2 eye diameters in front of anal-fin origin; 8.5 branched dorsal-fin rays; 5.5 branched anal-fin rays; caudal fin emarginate, with 9+8 branched rays; axillary pelvic lobe present; body with 7-9 bars wider than interspaces, very irregularly shaped and set, anterior bars wider than posterior bars, not always distinct; posterior bars with dark edges and pale center; black bar at caudal-fin base incomplete, not reaching dorsal and ventral midlines, restricted to a narrow, short bar at end of lateral line, curved forwards at upper extremity; dorsal-fin base with small anterior black spot followed by an orange patch and a very low elongate grey blotch (Ref. 36949).
Biology: 
IUCN Red List Status: Data deficient (DD); Date assessed: 19 January 2011 Ref. (130435)
Threat to humans:  harmless


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