I have four fish,they lived very calmly for about 8 months but now, two of them have started fighting with each other. One of them changes it’s color into a lighter color, at the same time the other, changes it’s color into a much brighter color. One is much weaker and it does not seem that he wants to continue in fighting.
Still the other one is attacking him. What is the problem with my fish? And what can I do?
It indicates many things when discus fish is fighting.
a) Bully B) Mating C) Spawning d) Showing off
If (a): Remove her temporary to another tank, then return.
If (b) and (c): Remove the rest for the pair to breed.
If (d): Increase the population and make her tired.
Find out the reason why then do what you think necessary.