Ключевые слова: aggressive, amazon, animal, animals, aquarium, aquatic, background, beautiful, carnivore, colorful, danger, dangerous, exotic, fauna, fin, fish, freshwater, life, mouth, nattereri, natural, nature, pet, piranha, predator, pygocentrus, pygocentrus nattereri, red, river, scary, sharp, south, swim, swimming, tank, teeth, tropical, underwater, water, wild, wildlife,