i duno i ve kept 2 of my RTCs together in my pond for more than 3 years. they seem to fight a little bit only during feeding time but other than that they seem pretty tame. when they reach a large enuf size (ie. mine r both over 3 feet) then they cant really do much dmg to each other due to their large bulk and armour. only a couple of battle scars here and there but nothing serious. baby RTCs on the other may be able to kill each other :skillerfish;1197720;1197720 said:if you have a big pond then you could keep a few don't try two they will fight and can kill each other but a group of 3-4 in a big pond could work it woul take alot to feed three 4 foot red tails so think about it first there a big responsibility