Rhamdia quelen (Quoy, Gaimard, 1824) Fig. 22 Body elongated; greatest body depth contained 4.7 to 5.7, head depth 6.7 to 9.0 and caudal peduncle depth 5.6 to 8.4 times in SL; head length 4.1 to 4.2, anal-fin base length 7.8 to 8.8, adipose-fin base length 2.3 to 2.7 and maxillary-barbel length 2.1 to 2.7 times in SL; snout length 3.0 to 3.1, horizontal orbital diameter 5.6 to 6.1 and least interorbital width 3.0 to 3.1 times in HL. Mouth terminal; premaxilla and dentary with several diminute and viliform teeth. Dorsal fin with 7, pectoral fin with 8-10, pelvic fin with 6 and anal fin with 14-15 rays. Ground color beige to brown; some specimens can present scattered dark-brown chromatophores on body. Dark-grey or brown fins (Graça, Pavanelli, 2007). Maximum standard length. 410.0 mm (Graça, Pavanelli, 2007). Distribution. Widespread in South America rivers.

Published as part of 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, pp. 1-111 in Neotropical Ichthyology 16 (2) on page 70, DOI: 10.1590/1982-0224-20170094, http://zenodo.org/record/3678395

{"references": ["Pavanelli CS, Graca WJ, Zawadzki CH, Britski HA, Vidotti AP, Avelino GS, Verissimo S. Fishes from the Corumba Reservoir, Paranaiba River drainage, upper rio Parana basin, State of Goias, Brazil. Check List. 2007; 3 (1): 58 - 64."]}