shoal of dangerous red-bellied piranha, adult wild ornamental fish species with sharp teeths from amazon river basin

active adult aggressive amazon america animal aqua aquaculture aquarium aquascape background basin big blackwater bloody blurred bright business careful clear commercial conditions controlled curious dangerous decorative dof ecology enduring experienced fauna fish fishkeeping free freshwater greedy grey habitat hobby hobbyist ichthyology instinct macro mysterious nattereri nature neotropical nervous ornamental parana piranha planted popular protection pygocentrus redbellied river schooling shallow sharp shoal solimoes south space species specimen swim tank teeths terrific threat trade understanding underwater water wild