Jenynsia lineata (Jenyns 1842)

Material examined. 11 exemplars; 18.1 - 49.3 mm SL. CI FML 7829, 2 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W Jaya River. CI FML 7883, 1 ex, 27° 19’ 07.5”S, 65° 41’ 51.2”W Jaya River. CI FML 7930, 8 ex, 27°12’ 36.21”S; 65°37’ 22.80”W Pueblo Viejo River .

Identification. Body elongate, slightly compressed laterally; protractile mouth with tricuspid teeth; absence of adipose fin; males with an intromittent organ or gonopodium formed by the modification of the anal fin presence of a swelling between the urogenital opening and the base of the anal fin of females; body with small spots forming 5-7 irregular lines (Amorim, 2018; Aguilera et al., 2013).