Characidium, Reinhardt, 1867

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 : 43

Characidium sp.

Fig. 12

Body moderately deep; greatest body depth contained 3.4 to 4.0 and caudal peduncle depth 8.0 to 10.4 times in SL; head length 3.1 to 3.7, predorsal distance 1.9 to 2.1 and caudal peduncle length 6.3 to 7.5 in SL; snout length 3.6 to 4.5, horizontal orbital diameter 2.3 to 3.2 and least interorbital width 2.8 to 4.0 in HL. Mouth terminal; isthmus covered by scales; premaxilla with 7-9, dentary with 8-11 and maxilla toothless. Lateral line incomplete, with 9-12 pored scales; longitudinal series with 29-34 scales; transverse series above lateral line with 4-4½ scale rows and below with 3-3½ scale rows. Dorsal fin with 10-12, pectoral fin with 14, pelvic fin and anal fins with 7-9 rays, and caudal fin with 18-19 rays. Ground color pale yellow; dark-brown longitudinal stripe, occasionally inconspicuous, from humeral spot to caudal peduncle; nine to 10 dark-brown transverse bars; black spot on the base of median caudal-fin rays. Hyaline fins ( Graça, Pavanelli, 2007).

Maximum standard length. 32.0 mm ( Graça, Pavanelli, 2007).

Distribution. Upper rio Paraná floodplain and left-bank tributaries of the rio Paraná in the State of Paraná.

Figures

Fig. 12. a. Characidium gomesi, NUP 17607, 59.3 mm SL, córrego São Lucas, tributary of the rio Amambaí, Juti, State of Mato Grosso do Sul. b. Characidium aff. zebra, 56.0 mm SL, uncat. c. Characidium sp., NUP 3450, 27.4 mm SL, lagoa da Esperança, Nova Alvorada do Sul, State of Mato Grosso do Sul. d. Cyphocharax modestus, NUP 3290, 80.0 mm SL, lagoa do Bilunga, Taquarussu, State of Mato Grosso do Sul. e. Cyphocharax nagelii, 130.0 mm SL, uncat. f. Steindachnerina brevipinna, 105.8 mm SL, fresh specimen, uncat. g. Steindachnerina insculpta, NUP 1424, 90.0 mm SL, Itaipu Reservoir, Guaíra, State of Paraná. h. Rhaphiodon vulpinus, 480.0 mm SL, fresh specimen, uncat.