Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated Author Ota, Renata Rúbia Author Deprá, Gabriel de Carvalho Author Graça, Weferson Júnio da Author Pavanelli, Carla Simone text Neotropical Ichthyology 2018 2018-06-11 16 2 1 111 journal article 10.1590/1982-0224-20170094 f68fe85c-2a4c-4625-b684-74f61398d6c2 1982-0224 3678395 Hyphessobrycon moniliger Moreira, Lima, Costa, 2002 Fig. 8 Body moderately deep; greatest depth contained 2.6 to 3.2 and caudal peduncle depth 8.2 to 10.9 times in SL; head length 3.0 to 3.6, predorsal distance 1.7 to 2.0 and caudal peduncle length 6.1 to 10.3 in SL; snout length 3.4 to 4.9, horizontal orbital diameter 2.1 to 2.8 and least interorbital width 3.0 to 3.7 in HL. Mouth terminal; inner row of premaxilla with 5, rarely 6 teeth, outer row with 2-5, dentary with up to 12 and maxilla with 3 teeth. Lateral line incomplete, with 6-8 pored scales; longitudinal series with 27-35; transverse series above lateral line with 7 or 8 scale rows and below with 4-5 scale rows. Dorsal fin with 11 rays, pectoral fin with 11-14 rays, pelvic fin with 8 rays, anal fin with 26-30 rays and caudal fin with 19 rays ( Moreira et al. , 2002 ). Ground color pale brown; one humeral spot ( Teixeira et al. , 2015 ); dark-brown longitudinal stripe on flank, continuous with caudal peduncle blotch; dark-brown caudal peduncle blotch triangle-shaped in females and juveniles, rectangular in males; hyaline fins. Maximum standard length. 27.0 mm. Biological data. Anal fin of mature males with an anterior lobe and convex outline and proximal portion of the lobed rays with a projection, anterodorsally oriented; females with concave outline ( Moreira et al ., 2002 ). Distribution. Middle rio Araguaia, rio Tocantins , rio Tapajós and upper rio Paraná basins. Remarks. Hyphessobrycon moniliger has been captured in upper rio Paraná floodplain since 2013 by the Nupélia staff. Hyphessobrycon moniliger is a non-native species from the upper rio Paraná basin, probably introduced from the rio Tocantins-Araguaia basin.