Dorsal soft rays (total): 10; Vertebrae: 34 - 36
5.3 cm SL (male/unsexed; (Ref. 83954))
Diagnosed from members of the genus Hasemania by the following characters: 11-21 perforated lateral line scales (vs. 5-9, except from Hasemania crenuchoides and Hasemania piatan); presence of a black vertically-elongate humeral spot (vs.absence, except from Hasemania crenuchoides, Hasemania nambiquara, and Hasemania piatan); and absence of scale sheath along anal-fin base (vs. presence, except from Hasemania maxillaris and Hasemania piatan). Differs further from Hasemania crenuchoides by having interorbital width 27.6-31.3 % of HL (vs. 34.0-35.6% of HL) and caudal peduncle length 13.9-17.4 % of SL (vs. 17.9-21.8% of SL); from Hasemania hanseni, Hasemania maxillaris, and Hasemania nambiquara by having 12-15 branched anal-fin rays (vs. 16-19); from Hasemania hanseni, Hasemania melanura and Hasemania nana by the presence of 1-2 maxillaryteeth (vs. teeth absent); and from Hasemania piatan by having 19 principal caudal-fin rays (vs. 18), 33-36 longitudinal scale series (vs. 27-32), and presence of caudal spot (vs. absence in Hasemania piatan); and also from Hasemania nambiquara by the absence of a broad horizontal black band in the midlateral body (Ref. 83954).Description: Dorsal fin ii,8; anal fin ii-iv,13-14; pectoral fin i,10-13; pelvic fin i,6; 4-5 scale rows between lateral line and pelvic-fin insertion (Ref. 83954).