hello, i have a 55 gallon tank that currently has 2 firemouths, a severum, and a gourami
i got the firemouths at the same time and they were the same size, a couple months back
for some reason one has grown much larger than the other and bullies the hell out of him
i had to put the little guy in a QT for a few weeks with some melafix because his fins were all withered away
im not really that experienced with aggressive behavior so what do i do about the mean fish
i put the little one back in yesterday and it was right away that the other fm started chasing him around
i already rearranged my rocks and stuff thinking that it would help and i also made spots for my little guy to hide but hes still getting chased all over.
any input is appreciated