Ancistrus, Kner, 1854

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 : 71

Ancistrus sp.

Fig. 23

Body deep; greatest body depth contained 3.0 to 4.0 and caudal peduncle depth 6.0 to 7.0 times in SL; head length 2.6 to 2.8, predorsal distance 2.1 to 2.2, dorsal-fin spine length 4.1 to 4.4, pectoral-fin spine length 2.9 to 3.4 and caudal peduncle length 3.5 to 3.8 in SL; snout length 1.2 to 1.4, horizontal orbital diameter 7.9 to 8.3 and least interorbital width 2.0 to 2.4 in HL. Mouth inferior; premaxilla with 8-15 and dentary with 10-16 teeth. Midlateral series with 25, predorsal series with 4, and dorsalfin base series with 12 plates. Dorsal fin with I,7-9, pectoral fin with I,6, pelvic fin with i,5 and anal fin with 6 rays. Ground color brown; light-beige rounded blotches on body, especially on head. Hyaline fins with dark-grey blotches.

Maximum standard length. 140.0 mm ( Graça, Pavanelli, 2007).

Distribution. Rio São Francisco Verdadeiro, upper rio Paraná basin.

Figures

Fig. 23. a. Ancistrus sp., 110.0 mm SL, uncat. b. Hypostomus albopunctatus, NUP 1761, 210.0 mm SL, Itaipu Reservoir, Santa Helena, State of Paraná. c. Hypostomus ancistroides, 140.0 mm SL, uncat. d. Hypostomus cochliodon, NUP 2556, 230.0 mm SL, Itaipu Reservoir, Santa Helena, State of Paraná. e. Hypostomus commersoni, NUP 856, 255.0 mm SL, Mourão Reservoir (rio Mourão, Campo Mourão, State of Paraná. f. Hypostomus hermanni, NUP 4927, 142.8 mm SL, rio Piquiri, tributary of the rio Paraná, Nova Laranjeiras, State of Paraná.