Species collected included vital food fishes and seasonal migrants. "The migratory catfishes Brachyplatystoma vaillantii, Hemisorubim platyrhynchos, Platynematichthys notatus, Platystomatichthys ...

In the lake, piraña (Serrasalmus sp., 0.304 mg/kg ww tissue) and huasaco (Hoplias malabaricus, 0.463 mg/kg ww tissue) were above USEPA fish tissue criterion, and in the main channel, toa ...