Hypostomus ternetzi (Boulenger, 1895)

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 : 75

Hypostomus ternetzi (Boulenger, 1895)

Fig. 24

Body deep; greatest body depth contained 4.2 to 4.7 and caudal peduncle depth 7.6 to 8.2 times in SL; head length 2.8 to 3.0, predorsal distance 2.2 to 2.4, dorsal-fin spine length 2.6 to 3.5, pectoral-fin spine length 3.0 to 3.3, adipose-fin spine length 9.2 to 10.3 and caudal peduncle length 3.1 to 3.3 in SL; snout length 1.6 to 1.8, horizontal orbital diameter 6.3 to 6.5 and least interorbital width 2.6 to 3.1 in HL. Mouth inferior; premaxilla with 59-127 and dentary with 60-126 teeth. Mid-lateral series with 25-27, predorsal series with 3 or 4, and dorsal-fin base series with 8 plates. Dorsal fin with I,7, pectoral fin with I,6, pelvic fin with i,5 and anal fin with 6 rays. Ground color light-beige, with dark-brown spots and/ or dark-brown vermiculate pattern, slightly conspicuous. Brown fins, sometimes with dark-brown spots.

Maximum standard length. 296.0 mm ( Graça, Pavanelli, 2007).

Distribution. Río Paraguay, middle río Paraná and río Uruguay basins.

Remarks. Hypostomus ternetzi 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. 24. a. Hypostomus iheringii, NUP 2577, 190.0 mm SL, rio Paraná, Porto Rico, State of Paraná.b. Hypostomus margaritifer, 235.0 mm SL, uncat. c. Hypostomus microstomus, NUP 1725, 165.0 mm SL, riacho Caracu, Porto Rico, State of Paraná. d. Hypostomus regani, NUP 2286, 170.0 mm SL, Corumbá Reservoir, Caldas Novas, State of Goiás. e. Hypostomus cf. strigaticeps, NUP 3190, 150.0 mm SL, rio Paraná, Porto Rico, State of Paraná. f. Hypostomus ternetzi, 210.0 mm SL, uncat.