Tatia aulopygia (Kner, 1858)
photo by Sneegas, G.W.

Family:  Auchenipteridae (Driftwood catfishes), subfamily: Centromochlinae
Max. size:  15.9 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Madeira River drainage of the Amazon basin. Mostly found in the upper reaches in Guaporé and Mamoré rivers.
Diagnosis:  Dorsal spines (total): 1-1; Dorsal soft rays (total): 5-5; Anal soft rays: 10-10; Vertebrae: 38-39. Diagnosed from all congeners by having the following characters: a short cranial fontanel, with the opening restricted to the frontals; a genital papilla with thick flap of skin around the deferent duct in males; and a notched anal fin in adult males. Differs further from other species of the genus by having nasal bone partially sutured to lateral margin of mesethmoid; 7-8 branched rays on anal fin; 10-11 ribs; and 38-39 post-Weberian vertebrae. Other distinguishing characters include: third nuchal plate well projected laterally with curved tip; and caudal-fin lobes of mature females similar in length, but mature males with slightly elongated upper lobe (Ref. 79512). Description: Weberian vertebrae 38-39. Anal fin iii,7-8. Pelvic fin i5 (Ref. 79512).
Biology:  Reaches sexual maturity above 8.0 cm SL (Ref. 79512).
IUCN Red List Status: Least Concern (LC); Date assessed: 19 August 2020 Ref. (130435)
Threat to humans:  harmless
Country info:   
 


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