marcus wrote:
Personally I wouldn't mix the 2. piranha are natural enemy of the Oscar in the wild.
best comment yet, The whole Oscar appearance, the rounded of fins, the O spot ect. are completely disigned to avoid "Fin-nipping" attack from Piranhas.
Can it be done?
Yes, like Paul stated, but you are taking a risk of a 'Free fight arena" and i wouldn't risk it myself.
Plus i don't know who's gonna win, but the piranha is not nescesarily the the winner.
In the wild O's will protect their offspring and while doing that will even go after the P's.
I say get a one species only tank with a school of P's and leave the O with better suitable tankmates.
I'd love to have a Piranha tank, but fish with teeth and small children don't mix!

no, that last bit is a lie!