For anyone barely using this app, and starting out on ark. DO NOT, I REPEAT, DO NOT TRY TO TAME IT. THEY CANNOT BE TAMED, AND IF DISTIRBED THEY WILL RIP YOU A NEW ONE WITH LITTLE EFFORT.

They can be tamed using a fish basket from aberration, can provide a nice sea defence!!!

Early levels, just build a raft as soon as possible, these little f*ckers are the Dilos of the water

Nothing nothing at all. They do nothing the only thing they are good for is fish meat and that's if your desperate

Piranha can be tamed. If you say i am crazy, no in aberration you can tame fish

Now introducing...
The mighty abberant piranha swarm!
20 fish baskets only!

If you get enough of these guys and put them on aggressive they will kill anything that comes near them

Make a pen in deep, not too deep water, make sure the pen is in the water and not near land or going up to land. Tame a lot of piranha and I mean a lot. It'll be difficult since they come in groups in the wild and can break fish baskets with one to two hits, so becareful. Keep an eye on health and oxygen. But once in the basket they can spoil really quickly so hurry and release in the pen you built earlier. Keep collecting until you think there's a lot to do the damage. Now go into your pen and set all of the piranha on aggressive. Boom piranha pit. Now you can drop players or animals in.

Build a raft and throw spears at it