Pseudoplatystoma reticulatum Eigenmann, Eigenmann, 1889

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 : 85

Pseudoplatystoma reticulatum Eigenmann, Eigenmann, 1889

Fig. 30

Body deep; greatest depth contained 5.5 to 6.0 times in SL; head length 2.6 to 2.7, anal-fin base length 8.0 to 8.9, adiposefin base length 11.0 to 13.0, maxillary-barbel length 2.2 to 2.5 in SL; snout length 2.0 to 2.3, horizontal orbital diameter 10.0 to 10.8, least interorbital width 4.0 to 4.9 in HL; orbital diameter 2.4 to 2.5 in interorbital width. Mouth subterminal; dentigerous tooth plates in both premaxilla and dentary. Dorsal fin with 7, pectoral fin with I,8 or 9, pelvic fin with 7 and anal fin with 14-17 rays. Ground color dark-grey above lateral line, whitish below; dark-brown loop-like transverse bars from posterior opercular flap to caudal peduncle. Dorsal and anal fins with black spots; pectoral and pelvic fins dark-grey dorsally, pale ventrally, with few black spots ( Graça, Pavanelli, 2007).

Maximum standard length. 800.0 mm.

Distribution. Central Amazon and rio Paraná basins.

Remarks. Pseudoplatystoma reticulatum was identified as P. fasciatum by Graça, Pavanelli (2007). Buitrago-Suárez, Burr (2007), in a taxonomic study of Pseudoplatystoma Bleeker, 1862 , restricted the distribution of P. fasciatum to the Guyana region and proposed the new identification for the specimens from the rio Paraná basin. Pseudoplatystoma reticulatum is a non-native species from the upper rio Paraná, and its occurrence can be associated with the functioning of the Canal da Piracema, a fish ladder that connects the region downstream from the Itaipu Dam to the region upstream from the dam.

Figures

Fig. 30. a. Pinirampus pirinampu, 620.0 mm SL, fresh specimen, uncat. b. Pseudoplatystoma corruscans, 675.0 mm SL, fresh specimen, uncat. c. Pseudoplatystoma reticulatum, 580.0 mm SL, fresh specimen, uncat. d. Sorubim lima, 487.0 mm SL, fresh specimen, uncat. e. Steindachneridion scriptum, 320.0 mm SL, uncat. f. Zungaro jahu, 800.0 mm SL, fresh specimen, uncat.