Red Belly Piranha aggression

[Miks786]

Hi everyone, this is my 4 foot grow out RBP tank, I notice that one of them is bitten on the head and tails, others also slightly nipped on the tail. I have 7 of them, what can I do to stop aggression?? I feed a lot

TIA

 

[Deadeye]

More hiding places would help a lot - it’s easier for them to get away from aggressors that way.
This is unfortunately the nature of piranhas, they are quite abusive with each other.

 

[tlindsey]

Hi everyone, this is my 4 foot grow out RBP tank, I notice that one of them is bitten on the head and tails, others also slightly nipped on the tail. I have 7 of them, what can I do to stop aggression?? I feed a lot

TIA

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You won't be able to control the nipping because young piranha are cannibals. They also will develop a pecking order.

 

[Miks786]

I have added about 35 feeder fish into the tank as I’m going away for 4 days, hopefully that will help

 

[Aqua Sanctuary]

I have added about 35 feeder fish into the tank as I’m going away for 4 days, hopefully that will help

Will help big time. Good insurance for the pecking order guys.

 

[Miks786]

Do they eventually stop pecking each other? From what size/ age?

 

[Deadeye]

It never stops to my knowledge - if anything I would expect it to get worse with size and age (less room to claim territories).

 

[tlindsey]

Do they eventually stop pecking each other? From what size/ age?

Even while feeding they can accidentally nip one another. The Redbelly even while small have sharp razor like teeth. Also agree with Deadeye