Hypostomus margaritifer (Regan, 1908)

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 : 74

Hypostomus margaritifer (Regan, 1908)

Fig. 24

Body deep; greatest body depth contained 4.1 to 4.5 and caudal peduncle depth 9.3 to 10.0 times in SL; head length 3.0 to 3.4, predorsal distance 2.4 to 2.7, dorsal-fin spine length 2.3 to 3.1, pectoral-fin spine length 2.6 to 3.1, adipose-fin spine length 13.5 to 16.0 and caudal peduncle length 2.9 to 3.6 in SL; snout length 1.4 to 1.6, horizontal orbital diameter 5.6 to 6.5 and least interorbital width 2.4 to 3.0 in HL. Mouth inferior; premaxilla and dentary with 19-32 teeth. Mid-lateral series with 26 or 27, predorsal series with 3, 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 dark-brown or -grey; light-beige spots and blotches on body. Dark-grey fins with light-beige spots.

Maximum standard length. 312.0 mm ( Graça, Pavanelli, 2007).

Distribution. Upper rio Paraná basin.

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.