Sewellia pterolineata Roberts, 1998

Family:  Gastromyzontidae (Hillstream loaches)
Max. size:  4.41 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: Trac Khuc River, Vietnam.
Diagnosis:  Vertebrae: 34-34. The presence of 3 bold concentric bands on posterior part of pectoral fin differentiates this species from all other Sewellia species. Combination of characters unique to the species includes: cavity with deep post-oral skinfold around mouth; absence of dark stripes on body; origin of pelvic fin in front of the origin of dorsal fin; origin of pectoral fin behind corner of mouth; pelvic fin reaching origin of anal fin; branched pelvic-fin rays 8-16 with a row of individual serrae; absence of skin-fold between oropectoral membrane and ventral surface of head; 55 scales on lateral line (Ref. 40433).
Biology: 
IUCN Red List Status: Endangered (EN); Date assessed: 05 September 2010 (A2c+3c; B1b(i,ii)) Ref. (130435)
Threat to humans:  harmless
Country info:   
 


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