Erythrinus erythrinus (Bloch, Schneider, 1801)

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 : 45-46

Erythrinus erythrinus (Bloch, Schneider, 1801)

Fig. 13

Body elongated; greatest body depth contained 3.5 to 5.0 and caudal peduncle depth 2.0 to 4.0 times in SL; head length 3.1 to 3.5, predorsal distance 1.2 to 1.7 and caudal peduncle length 10.0 to 12.1 in SL; snout length 2.6 to 3.0, horizontal orbital diameter 1.8 to 4.3 and least interorbital width 2.5 to 2.7 in HL. Mouth terminal; premaxilla with 8-10, dentary with 32-36 and maxilla with 30-33 teeth. Lateral line with 28 or 29 pored scales; transverse series above lateral line with 3-4 scale rows and below with 3 or 2½ scale rows. Dorsal fin with 12, pectoral fin with 15, pelvic fin with 8, anal fin with 10 and caudal fin with 19 rays ( Graça, Pavanelli, 2007). Ground color pale brown, dorsal regions darker than ventral; dark-brown rounded blotch, when present, on humeral region. Fins with darkbrown spots, sometimes fused forming irregular transverse stripes, especially on dorsal and caudal fins.

Maximum standard length. 200.0 mm ( Graça, Pavanelli, 2007).

Distribution. Coastal rivers of Northern South America, río Orinoco and Amazon basins, Paraná-Paraguay system ( Eschmeyer et al., 2017).

Remarks. Erythrinus erythrinus is a non-native species from the upper rio Paraná, and its occurrence can be associated with its introduction as a live bait by anglers.

Figures

Fig. 13. a. Erythrinus erythrinus, NUP 16220, 77.4 mm SL, córredo da Ponte, Mundo Novo, State of Mato Grosso do Sul. b. Hoplerythrinus unitaeniatus, NUP 3437, 150.2 mm SL, lagoa Bilunguinha, Taquarussu, State of Mato Grosso do Sul. c. Hoplias intermedius, MZUSP 69370, 277.2 mm SL, rio Suaçuí Pequeno, downstream from the bridge of Procópio, Coroaci, Minas Gerais State. d. Hoplias mbigua, NUP 292, 260.0 mm SL, Itaipu Reservoir, Santa Helena, State of Paraná. e. Hoplias misionera, NUP 10408, 190.0 mm SL, lagoa Pousada das Graças, Taquarussu, State of Mato Grosso do Sul. f. Hoplias sp. 2, NUP 3457, 250.0 mm SL, ressaco do Leopoldo (ilha Mutum), Batayporã, State of Mato Grosso do Sul. g. Hoplias sp. 3, NUP 3458, 170.0 mm SL, ressaco do Leopoldo (ilha Mutum), Batayporã, State of Mato Grosso do Sul. h. Hemiodus orthonops, 137.0 mm SL, uncat.