“…The same was observed for the females of Schizodon borellii and Pimelodus maculatus (Doria and Andrian, 1997), females of Brycon hilarii, and both sexes of Hypophthalmus edentatus (Monteiro et al, 2007). However, Vismara et al (2004) observed that gonadal maturation had an effect on the allocation of muscle energy of L. platymetopon in the Upper Paraná River floodplain, as opposed to what was observed in the present study. This effect had also been observed for the males of Serrassalmus marginatus, S. maculatus and Brycon hilarii at the Manso reservoir and adjacent area (Santos et al, 2006;Monteiro et al, 2007).…”