Every year I think I'm closer to knowing what makes them
Stable... Not a chance... I've owned lots of tigers to know what makes one stable
Doesn't mean its the same for others... All of T1s comments are accurate and I concur the reasons he mentions do make the IT go stable.... However
I look at my tank now. Fish have been fed today, 7 /10 tigers are all stable and swimming peacefully together, all at differed levels in the tank.. No fighting , no stress not chasing: to me right now, they seem calm happy and not stressed.
Yet, tomorrow morning they might all be unstable in the corners... It happens .
Half of my tigers go black when chased or in a net, some do the opposite.
I don't think anyone is right, I think stable = stressed or not-stressed (vice versa)