Jenynsia lineata (Jenyns, 1842)

Soricetti, Mariano, Morawicki, Santiago, Guardiola Rivas, Fredy José, Guidi, Catalina, Quezada, Facundo, Almirón, Adriana Edith & Solimano, Patricio José, 2020, Ichthyofauna of the lower course of the Negro river drainage, Patagonia Argentina, Check List 16 (4), pp. 895-905 : 901

Jenynsia lineata (Jenyns, 1842)

Figure 3F

Material examined. ARGENTINA • 1 ♀, 59 mm; Site

1; 40°26ʹ18ʺS, 063°40ʹ54ʺW; 21 Jan. 2016; M. Soricetti leg.; MPCN-Ict 6. • 1 ♂, 23 mm; Site 1; 40°26ʹ18ʺS, 063° 40ʹ54ʺW; 21 Jan. 2016; F. Guardiola Rivas leg.; MPCN- Ict 47 . • 1 ♂, 27 mm; Site 3; 40°43ʹ30ʺS, 063°14ʹ02ʺW; 23 Apr. 2016; M. Soricetti leg.; MPCN-Ict 48 . • 1 ♀, 35 mm; Site 4; 40°43ʹ15ʺS, 063°36ʹ02ʺW; 20 Feb. 2016; P. Solimano leg.; MPCN-Ict 49 . • 1 ♀, 37 mm; Site 2; 40°42ʹ48ʺS, 063°23ʹ08ʺW; 13 Dec. 2016; M. Soric- etti leg.; MPCN-Ict 50 . • 1 ♀, 43 mm; Site 3; 40° 4 3ʹ30ʺS, 063°14ʹ02ʺW; 30 Apr. 2016; F. Guardiola Rivas leg.; MPCN-Ict 51 . • 1 ♂, 49 mm; Site 4; 40°43ʹ15ʺS, 063°36ʹ02ʺW; 23 May. 2016; M. Soricetti leg.; MPCN- Ict 52 . • 1 ♀, 52 mm; Site 2; 40°42ʹ48ʺS, 063°23ʹ08ʺW; 22 Nov. 2016; P. Solimano leg.; MPCN-Ict 53 . • 1 ♂, 55 mm; Site 1; 40°26ʹ18ʺS, 063°40ʹ54ʺW; 18 Mar. 2016; F. Guardiola Rivas leg.; MPCN-Ict 54 . • 1 ♀, 58 mm; Site 1; 40°26ʹ18ʺS, 063°40ʹ54ʺW; 23 May. 2017; M. Soricetti leg.; MPCN-Ict 55 .

Identification. Small, body subcylindrical. A large central scale on the dorsal surface of the head. Predorsal series with 13 or 14 scales. Lateral line with 30–32 scales. A tubular gonopodium in the males formed by modified rays of the anal fin. Anal fin with 13 or 14 rays. Light gray background color with dash–shaped spots arranged in longitudinal lines, with four or five lines on the cau- dal peduncle.