Jim Jim wrote
Like prisoners in a jail there is an acceptable behavior and a non acceptable behavior and too much aggression is unacceptable.
Although I must say I do not like the jail assumtion, I must say it does help a little. A little, because in a jail people are brought in a very strange situation. Firstly they are selected - no crime, no jail. Than they are with only males, or only females. This does influence behaviour quite a bit.
I would rather say, look at a jail, and learn from it: if you put people in solitude confinement, the do strange things. Do you expect your fishes to be better? I do not.
Unacceptable behaviour from my fishes? If the demolish the tank setup, or each other,. I made a mistake, so what I did was perhaps unacceptable. The fishes can not behave differently.
Some of mine I've had for over 15 years
If you mangaged this by keeping them in a solitary tank, I do not think the fish has much reason to be gratefull, personally.