This piscivorous species can reach a length of SL. These fishes have a laterally compressed body, with an elongated head and a prominent jaw. The fins are large and rounded. The basic coloration varies from pale pink to deepred to gold. Males are a bit larger than females, with a more accentuated red coloration. Females are usually rounder. The special feature of this species is in the jaws that are extensible to more than 1/4 of the length of the entire body, which allows to prey fishes of considerable size but also to suck small fishes directly into the mouth.