piranha fish in aquarium

actinopterygii aggression aggressive amazon america american animal animals aquarium aquatic captivity carnivore carnivorous characiformes closeup colorful creature danger dangerous detail dive exotic fauna fear fish fresh freshwater furious goldfish horror image life looking marine mouth nattereri natural nature ocean photography picture pirana piranha predator predatory profile pygocentrus river scary serrasalminae serrasalmus sharp south spooky swim swimming taxidermy teeth terrifying tropical tropicalaquarium underwater vertebrate water wild wildlife with