they eat both
Piranhas mainly feed on meat. They can eat dead or alive fish. You may think that these fish are very fearsome. But they aren't. They have very sharp teeth, but they can't rip your arm off. And if you think about it, piranhas need to eat. Piranhas are just being piranhas. After all, piranhas are still a part of nature!
Of course it is... are you going to eat your fish alive then?
The piranhas
Actully, piranhas usually won't eat fish. They may eat them if they are already dead, though. Piranhas typically eat animals such as duck that are floating above the surface, which may appear to be dead. Piranhas are mainly scavengers, and feed off of dead animals carcuses usually. To skin a baby cow to the bone by a pack of piranhas will sometimes take only 3 minutes. Also if you were wondering, piranhas aren't the scary killer fish you see in movies. They don't kill humans intenionally. The only reason they may attack a human is if they sense fear. Once they do, they know you are vunrable. Sorry if I gave you more information than you wanted to know. Hope I helped :). XoXo, xxxLeadTheLostxxx
The piranhas will kill and eat any animal alive in water in large groups.
Piranhas won't eat people unless you have a bad cut.
meat and fish
piranhas
Caimans, anacondas, otters, herons, and giant fish will eat piranhas.
Some types of fish can eat other bigger fish. For examples, piranhas often eat bigger animals including fish.
it can be a consumer and a producer,because a crustean eat's dead fish and also eats alive fish
no because sharks are larger in size and need to eat a bigger portion of fish then piranhas