Black Piranha / Serrasalmus Rhombeus

Here's my black piranha. He's approx 4" long and enjoys the space of his 65 gallon tank.

Oh its not the usual red-bellied kind. It should be in a school, right? How brutal does it eat?

Aren't black piranhas solitary, at least in adulthood anyway?

I hope those poor goldfish aren't dinner   

Yes, they are strictly solitary fish even at this size. There the most aggressive of the Piranhas. Unfortunately the slowest growing as well.

If you look closer at the pic, the one poor goldfish is already swimming away with only half its body.

I'm just waiting for some whitefish and trout fillets to thaw out and try and get him switched over to something different. Although he will still be getting a % of live food.

Oh that sounds good then. At least you won't be tempted to get a lot of it. Poor goldfishy. Didn't really notice that til callum mentioned it :-×