Hasemania nambiquara Bertaco & Malabarba, 2007
Hasemania nambiquara
photo by Hoffmann, P. and M. Hoffmann

Family:  Characidae (Characins; tetras), subfamily: Stethaprioninae
Max. size:  2.7 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: known only from the upper Rio Tapajós drainage in Brazil.
Diagnosis:  Dorsal soft rays (total): 11-11; Anal soft rays: 20-23. Diagnosed from all other species of Hasemania by the unique presence of a broad black band, situated ventral to midlateral line, and extending from the humeral region to the caudal-fin, and by the presence of a black vertically-elongate humeral spot. Other useful distinguishing characters include a higher number of maxillary teeth with more cusps (two or three tri- to pentacuspid teeth vs. none, one, or two conical or bicuspid teeth in Hasemania hanseni, Hasemania maxilaris, Hasemania melanura, and Hasemania nana); and higher number of branched anal-fin rays (16-19 vs. 11-16 in Hasemania crenuchoides, Hasemania melanura, and Hasemania nana) (Ref. 75743). Description: D ii,9; A iv,16-19; P i+9-10; V i+6-7. Scale rows between lateral line and pelvic-fin insertion 3-5 (Ref. 75743).
Biology:  Occurs along the margins of semilentic stretches of a shallow, clear water river, with sand and leaves on the bottom and a moderate amount of riparian vegetation (Ref. 75743).
IUCN Red List Status: Least Concern (LC); Date assessed: 07 November 2018 Ref. (130435)
Threat to humans:  harmless


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