Aphyocharax dentatus

description

1. Contact between ectopterygoid and anterodorsal region of quadrate (162): (0> 1) absent. Paralleled in nodes 184 and 242, and in Engraulisoma taeniatum, Prionobrama paraguayensis, and Stichonodon insignis. Some trees: Paralleled in the Cheirodontinae and in Microschemobrycon casiquiare. 2. Number of branched pelvic-fin rays (258): (0> 1) seven or more. Reversal of synapomorphy 3 of the Aphyocharacinae. Paralleled in Paragoniates alburnus.

Phylogeny of the family Characidae (Teleostei: Characiformes): from characters to taxonomy

description

Body elongate; greatest depth contained 3.8 to 4.7 and caudal peduncle depth 8.9 to 10.9 times in SL; head length 3.5 to 4.5, predorsal distance 1.8 to 2.0 and caudal peduncle length 7.2 to 7.6 in SL; snout length 3.2 to 4.6, horizontal orbital diameter 3.5 to 4.5 and least interorbital width 2.8 to 3.5 in HL. Mouth terminal, slightly prognathous; premaxilla with 4 - 8, dentary with 9 - 23 and maxilla with 8 - 17 teeth. Lateral line incomplete, with 8 - 13 pored scales; longitudinal series with 36 - 42 scales; transverse series above lateral line with 5 - 7 scale rows and below with 3 - 4 scale rows. Dorsal fin with 9 - 11, pectoral fin with 10 - 14, pelvic fin with 7 - 8, anal fin with 16 - 22, and caudal fin with 19 rays (Lima, 2003). Ground color silvery; diffuse, oval transversely elongated, humeral spot; no other black marks on body and fin. Caudal fin red, other fins hyaline to yellowish (Graça, Pavanelli, 2007). Maximum standard length. 60.0 mm (Graça, Pavanelli, 2007).

Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated

discussion

Remarks. Aphyocharax dentatus is a non-native species from the upper rio Paraná and its occurence can be associated with the filling of the Itaipu Reservoir and the consequent inundation of the Sete Quedas Falls (Graça, Pavanelli, 2007).

Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated