Catathyridium jenynsii (Günther, 1862)

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 : 90

Catathyridium jenynsii (Günther, 1862)

Fig. 32

Body deep; greatest body depth contained 1.5 to 1.8, caudal peduncle depth 4.1 to 6.0 and head depth 2.8 to 3.4 times in SL; caudal peduncle depth 2.7 to 4.0 in body depth; snout length 2.8 to 4.0, horizontal orbital diameter 8.7 to 15.9 and least interorbital width 6.1 to 11.8 in HL. Mouth terminal; premaxilla and dentary with several small conical teeth. Lateral line with 70-85 pored scales. Dorsal fin with 55-60, pelvic fin with 5 and anal fin with 40-44 rays. Ground color brownish; right side of body with dark-brown irregular spots; five or six dark-brown transverse stripes; left side of body with no pigmentation. Brown fins with dark-brown spots ( Graça, Pavanelli, 2007).

Maximum standard length. 256.0 mm ( Graça, Pavanelli, 2007).

Distribution. Rio Paraná and rio Uruguay basins.

Remarks. Catathyridium jenynsii is a non-native species from the upper rio Paraná and its occurrence can be associated with the filling of the Itaipu Reservoir and the consequent inundation of the Sete Quedas Falls.

Figures

Fig. 32. a. Synbranchus marmoratus, NUP 414, 500.0 mm TL, lagoas (ilhas), Porto Rico, State of Paraná. b. Catathyridium jenynsii, NUP 1921, 107.6 mm SL, rio Paraná, Porto Rico, State of Paraná.