Piranhas can make different sounds, especially when they’re feeling afraid or defensive. They may bark, grunt or make thudding or drumming sounds. To do this, they use their swimbladder, an organ most fish have that helps them float in water.
Piranhas live in groups called schools or shoals. Usually a shoal has about 20 individuals but sometimes can have over 100. Swimming together helps keep the fish safe from predators, including larger fish, crocodiles, birds and mammals like jaguars and humans. Piranhas spend most of their day hiding and looking for food.
Piranhas eat smaller fish and nips of other fish’s tails, bugs and worms, crustaceans and carrion (dead meat). Some are omnivorous, eating plants and seeds as well as meat, and one species in Brazil is reported to only eat river weeds. These fish help maintain healthy ecosystems as both predators and scavengers.
Red bellied piranhas are known to be carnivorous and hunt in packs. They can smell and sense movement. At Berkshire Museum, they eat worms and frozen fish called smelt. If one of the piranha in pack is weak or sick, the others will eat it.
Credit : Aquarium Facts
Picture Credit : Google
