Tatia caxiuanensis Sarmento-Soares & Martins-Pinheiro, 2008

Family:  Auchenipteridae (Driftwood catfishes), subfamily: Centromochlinae
Max. size:  4.07 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  South America: known only from the type locality in Curuá river, lower Amazon basin, Brazil.
Diagnosis:  Dorsal spines (total): 1-1; Dorsal soft rays (total): 5-5; Anal soft rays: 10-10; Vertebrae: 32-32. Diagnosed from other species of the genus Tatia by the following features: males with distinctive modified anal fin, with elongate rays, with no denticulations on ray segments; cranial fontanel wide, with a single opening; infraorbital 1 with pronounced ventral process, almost reaching the antero-ventral border of eye rim; nasal ossified as tubes, with no medial flanges of bone and not sutured to mesethmoid; five branched pectoral-fin rays; and snout deep, depth more than 46.7% HL. Can be further distinguished by having caudal fin lobes with about the same length in both adult females and males; post-Weberian vertebrae 32; and a smaller adult size, less than 5.0 cm SL (Ref. 79512). Description: A iii,7; V i+5. Post -Weberian vertebrae 32 (Ref. 79512).
Biology:  Attains sexual maturity at 2.93 cm SL (Ref. 79512).
IUCN Red List Status: Least Concern (LC); Date assessed: 07 November 2018 Ref. (130435)
Threat to humans:  harmless


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