min tank size for RBP?

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I agree with the comments above. With anything less than a 40 or 55, if pertaining to an adult rbp, there'd be too much and too fast of a waste buildup. Plus, with a larger tank..you'd have enough space for a shoal.;)
 
what is there behavior like? do they sleep on the bottom like oscars do? the reason im asking is because im considering one RBP with a crayfish, so that the crayfish can clean up after the RBP, but if it sleeps on the bottom since i will buy it as a baby i bet the crayfish would try to eat it
 
yemista,
Most people will tell you varying things, when I had my 5 reds, 3 of them usually stayed in a driftwood cave I had setup. Occasionally chasing each other around the tank. The 4th red made a nest on the other side of the tank and attacked any fish that got near. The 5th patrolled the tank constantly looking for food. He always hit the food / feeders before any of the other fish. This was the guy that would get just a little too close to my hand while cleaning the tank.

If you have a brave crayfish he will probably get eaten. If you have an active P, even if the crayfish is in a good hiding spot the p will find a way to get him.
I watched a pair of my reds trap a crayfish behind a piece of driftwood and they just waited for him to make a move. I found half of him a few hours later in the tank.

I have read that reds are less aggressive solo, so you may have more luck. Crayfish are easy to catch and are free food as long as you quarantine them. If they Co-hab then thats even better.
 
do i have to worry about the crayfish eating the piranha? i was going to start out with a very small one, either 1 or 2 inches and i dont know if at that size it would be bale to tear up a 4-5" crayfish, but then again i never had them
 
How many could go in a 75 gallon tank?
That's the biggest kind we've got around here..... :(
 
i would put 3 in the 75g. i find that piranhas are less likely to pick on each other in odd numbers.
 
I had 5 adults in a 75g.. It was filtered 10x and I did weekly waterchanges. As far as space goes, they mostly stayed in the same area of the tank, one or two would utilize it. If you can keep the water clean for them, go for 4-5.
I have heard people say about "odd numbers" in red bellies to help with aggression, but have kept 2 and 4 before without ANY problems. The most aggression I experienced was with 5, and it was a male protecting his "nest".
 
Biggest tank around here: 5" by 3" by 3"
don't know exact measurements, but I do know its a 75 gallon long. I trust my LFS, however ridiculous that might seem.
 
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