Can this work long term?

[Redearsunfish]

I once kept a single RBP in a 25 gallon tank for 5 years. I lost it due to poor water quality (my stupidity)

My new plan is to keep a single RBP in a 45 gallon tank with a Fluval U4 internal and a Large capacity canister and a heater.

Can RBPs be kept alone? I don't have the room for more than one. And no I don't want exodons or whatever they are called.

I know the general consensus is a school, but can a single fish be kept. I'm thinking of employing a thin mirror affixed to the outside glass on either end to give it company.

 

[Redearsunfish]

nobody?

 

[crashwl21]

This will work fine for you. Most of the time they will kill each other off and you will only have one any how.

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[Vanica]

A solo red in a 45 will work but he may be very shy because there aren't fish to school with.

 

[brich999]

A solo red in a 45 will work but he may be very shy because there aren't fish to school with.

+1 they tend to be far more timid and lazy. What about another type of piranha? Most serra will take a long time to outgrow that tank if purchased small and are solo fish anyways