Imparfinis usmai Ortega-Lara, Milani, DoNascimiento, Villa-Navarro & Maldonado-Ocampo, 2011

Family:  Heptapteridae (Three-barbeled catfishes)
Max. size:  10.25 cm (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Colombia. Distributed along the upper basin of río Cauca and río Magdalena, and in the lower río Patía basin on the Pacific slope of western cordillera of Colombia. Imparfinis usmai is sympatric with I. nemacheir in the río Magdalena.
Diagnosis:  Small heptapterid catfish (largest specimen 100.8 mm SL), with elongated body, triangular in cross-section at dorsal-fin origin, progressively more laterally compressed to tail region. Dorsal profile slightly convex from snout tip to dorsal-fin origin, slightly concave just posterior to dorsal-fin base to adiposefin origin, straight and descending along adipose-fin base, then ascending along caudal peduncle. Ventral profile of head straight, slightly convex along abdomen, then straight to analfin origin and slightly descending along caudal peduncle (Ref. 88952).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 09 October 2014 Ref. (130435)
Threat to humans:  harmless
Country info:   
 


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