Serrapinnus, Malabarba, 1998

Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, Neotropical Ichthyology 16 (2), pp. 1-111 : 39

Serrapinnus sp. 2

Fig. 10

Body elongated; greatest body depth contained 2.8 to 3.9 and caudal peduncle depth 8.0 to 10.7 times in SL; head length 4.0 to 4.6, predorsal distance 1.8 to 2.0 and caudal peduncle length 9.7 to 10.8 in SL; snout length 3.1 to 3.9, horizontal orbital diameter 2.0 to 2.6 and least interorbital width 2.5 to 3.5 in HL. Mouth terminal; premaxilla with 4 or 5, dentary with 6, and maxilla with 2 teeth. Lateral line incompletely pored, with 6 or 7 pored scales; longitudinal series with 31-34 scales; transverse series above lateral line with 3½ scale rows and below with 3 or 3½ scale rows. Dorsal fin with 11, pectoral fin with 12 or 13, pelvic fin with 8 or 9, anal fin with 20-22 and caudal fin with 19 rays. Ground color whitish; dark-brown longitudinal stripe on flank, from pseudotympanum to caudal peduncle; dark-brown rounded blotch on posterior portion of caudal peduncle and caudal-fin base, not extended to median caudal-fin rays. Hyaline fins; dorsal and anal fins with distal portion black ( Graça, Pavanelli, 2007).

Maximum standard length. 29.0 mm ( Graça, Pavanelli, 2007).

Distribution. Upper rio Paraná basin.

Figures

Fig. 10. a. Aphyocheirodon hemigrammus, NUP 13774, 36.3 mm SL, lagoa do Bilunga, tributary of the rio Paraná, Taquarussu, State of Mato Grosso do Sul. b. Odontostilbe avanhandava, NUP 1517, 40.0 mm SL, canal do Meio (ilha Porto Rico), Porto Rico, State of Paraná. c. Serrapinus calliurus, NUP 17494, lagoa do Guaraná, tributary of the rio Baía, Taquarussu (top, female, 24.1 mm SL; bottom, male, 21.4 mm SL). d. Serrapinnus heterodon, NUP 17495, lagoa do Guaraná, tributary of the rio Baía, Taquarussu, State of Mato Grosso do Sul (top, female, 32.5 mm SL; bottom, male, 30.1 mm SL). e. Serrapinnus notomelas, 31.8 mm SL, fresh specimen, uncat. f. Serrapinnus sp. 1, NUP 3283, lagoa do Bilunga, Taquarussu, State of Mato Grosso do Sul (top, female, 28.7 mm SL; bottom, male, 28.2 mm SL). g. Serrapinnus sp. 2, NUP 17045, 33.5 mm SL, córrego Itauna, Alto Paraíso, State of Paraná.