Plagioscion squamosissimus (Heckel, 1840)

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 : 102

Plagioscion squamosissimus (Heckel, 1840)

Fig. 36

Body deep; greatest depth contained 2.9 to 3.1, head depth 3.4 to 3.6 and caudal peduncle depth 10.3 to 11.8 times in SL; head length 2.7 to 3.3, predorsal distance 1.5 to 1.8, prepectoral distance 1.7 to 2.2 in SL; snout length 3.7 to 4.2, horizontal orbital diameter 4.2 to 5.6 and least interorbital width 3.6 to 4.9 in HL. Mouth terminal; premaxilla and dentary with several teeth rows. Lateral line with 46-51 pored scales, transverse series above lateral with 12-15 and below lateral line with 15-20 scale rows. Dorsal fin with X,I,29-33, pectoral fin with 15-20, pelvic fin with I,6 and anal fin with II,6 rays. Ground color silvery. Light fins ( Graça, Pavanelli, 2007).

Maximum standard length. 512.0 mm ( Graça, Pavanelli, 2007).

Distribution. Amazon, río Orinoco and rio São Francisco basins, and Paraná-Paraguay system ( Eschmeyer et al., 2017).

Remarks. Plagioscion squamosissimus is a non-native species from the upper rio Paraná and its occurrence can be associated with its introduction due to commercial importance.

Figures

Fig. 36. a. Melanorivulus sp., NUP 17575, córrego Querência, Amambaí, State of Mato Grosso do Sul (top, female, 24.7 mm SL; bottom, male, 28.3 mm SL). b. Pamphorichthys hollandi, NUP 16549, rio Baia, Taquarussu, State of Mato Grosso do Sul, Brazil (top, female, 22.8 mm SL; bottom, male, 17.6 mm SL). c. Phalloceros harpagos (top, female, NUP 9360, 22.7 mm SL, female, córrego de nome desconhecido, Jatei, State of Mato Grosso do Sul; bottom, male, NUP 1938, 18.0 mm SL, riacho Caracu, Porto Rico, State of Paraná). d. Phallotorynus pankalos, NUP 5839, córrego Sossego, tributary of the rio Iguatemi, Paranhos, State of Mato Grosso do Sul (top, female, 28.4 mm SL; bottom, male, 18.6 mm SL). e. Phallotorynus victoriae, NUP 1603, lagoa do Portinho, tributary of the rio Paraná, Três Lagoas, State of Mato Grosso do Sul (top, female, 14.6 mm SL; bottom, male, 18.6 mm SL). f. Poecilia reticulata, fresh specimens, uncat (top, female, 35.2 mm SL; bottom, male, 20.3 mm SL). g. Plagioscion squamosissimus, 330.0 mm SL, fresh specimen, uncat.