Characidium borellii (Boulenger 1895)

Material examined. 42 exemplars; 33.4 - 59.8 mm SL. CI FML 7812, 3 ex, 27° 12’ 29,6”S, 65° 37’ 39,2”W Pueblo Viejo River. CI FML 7815, 1 ex, 27° 12’ 29,6”S, 65° 37’ 39,2”W Pueblo Viejo River. CI FML 7835, 4 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W Jaya River. CI FML 7842, 1 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W Jaya River. CI FML 7844, 2 ex, 27° 17’ 39.8”S, 65° 51’ 02.0”W Jaya River. CI FML 7850, 10 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W Jaya River. CI FML 7852, 2 ex, 27° 17’ 39.8”S, 65° 51’ 02.0”W, Jaya River. CI FML 7915, 1 ex, 27° 21’ 23.8” S, 65° 48’ 33.3”W Cochuna River. CI FML 7918, 12 ex, 27° 21’23.8” S, 65° 48’33.3” W Cochuna River. CI FML 7924, 6 ex, 27°12’ 36.21”S; 65°37’ 22.80”W Pueblo Viejo River .

Identification. Caudal peduncle relatively compressed and not very narrow; circulary body section; complete lateral line with 36-39 scales, 14 scales around caudal peduncle, 5 scales from pelvic fin to anus isthmus covered by scales; scales 4- 3 in transverse series from dorsal to pelvic fins; 10 scales from dorsal fin to adipose fin; subterminal mouth; teeth uniserial; 5-8 premaxillary and dentary teeth; adipose fin moderately developed; dorsal fin with 10 rays; anal fin normally with 9 rays; pectoral and pelvic fins well developed; a black longitudinal band extends from the snout to base of caudal fin; normally with 9 transverse bars (Ringuelet et al., 1961; Gery et al., 2001).