Acrobrycon tarijae Fowler 1940

Material examined. 83 exemplars; 49.2 - 74.2 mm SL. CI FML 7814, 2 ex, 27° 12’ 29.6”S, 65° 37’ 39.2”W Pueblo Viejo River. CI FML 7817, 5 ex, 27° 12’ 29.6”S, 65° 37’ 39.2”W Pueblo Viejo River. CI FML 7833, 10 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W, Jaya River. CI FML 7840, 5 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W Jaya River. CI FML 7845, 4 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W Jaya River. CI FML 7846, 8 ex, 27° 17’ 39.8”S, 65° 51’ 02.0”W Jaya River. CI FML 7858, 12 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W Jaya River. CI FML 7884, 2 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W Jaya River. CI FML 7914, 8 ex, 27° 21’ 23.8” S, 65° 48’ 33.3”W Cochuna River. CI FML 7917, 12 ex, 27°21’23.8” S, 65° 48’33.3”W Cochuna River. CI FML 7934, 15 ex, 27° 09’33.3” S 65°42’ 37.6”W Pueblo Viejo River .

Identification. Number of perforated scales of the lateral line: 51-60; number of horizontal-scale rows around the caudal peduncle: 19-21; lower number of vertebrae (37-39); and pleural ribs: 12-13 pairs; number of branched anal-fin rays: 23-27; presence of a glandular pocket at the base of the lower lobe of the caudal fin in males; orange adipose fin (Briñoccoli et al., 2022).