Heptapterus mustelinus (Valenciennes, 1835)

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 : 67

Heptapterus mustelinus (Valenciennes, 1835)

Fig. 21

Body elongated; greatest body depth contained 10.0 to 10.6, head depth 11.9 to 12.2 and caudal peduncle depth 17.7 to 18.4 times in SL; head length 6.1 to 6.4, anal-fin base length 4.9 to 5.5, adipose-fin base length 2.0 to 2.2 and maxillary-barbel length 6.0 to 7.2 times in SL; snout length 2.9 to 3.1, horizontal orbital diameter 4.9 to 5.2 and least interorbital width 3.7 to 3.9 times in HL. Mouth terminal; premaxilla and dentary with several diminute and viliform teeth. Dorsal fin with 7, pectoral fin with 6-9, pelvic fin with 6 and anal fin with 15-17 rays. Ground color dark-brown; dark-brown transverse bars on dorsum. Hyaline or lightbeige fins ( Graça, Pavanelli, 2007).

Maximum standard length. 130.0 mm ( Graça, Pavanelli, 2007).

Distribution. Río de la Plata basin and costal drainages of Southern Brazil.

Coments. Heptapterus mustelinus 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 ( Langeani et al., 2007).

Figures

Fig. 21. All from Brazil. a. Cetopsorhamdia iheringi, NUP 14875, 51.1 mm SL, rio Curimba, Umuarama, State of Paraná. b. Heptapterus mustelinus, NUP 2500, 118.8 mm SL, Itaipu Reservoir, Santa Helena, State of Paraná. c. Imparfinis borodini, NUP 3028, 128.3 mm SL, rio Mourão, tributary of the rio Ivaí, Campo Mourão, State of Paraná. d. Imparfinis mirini, NUP 87, 64.4 mm SL, rio Alambari, Botucatu, State of São Paulo. e. Imparfinis schubarti, NUP 11369, 99.5 mm SL, rio Pitangui (cachoeira do Leajenski), Ponta Grossa, State of Paraná. f. Phenacorhamdia tenebrosa, NUP 4949, 73.4 mm SL, ribeirão Maringá, Maringá, State of Paraná.