Yes,have you done something similar to this plan?
A blue, a two spot, a Desjardin, and yellow, first in a 65g when small for two years, then a 180g for another 3 years so far.
In my case the issue was with the Desjardin and the yellow for 2nd and 3rd place.
They swam at each other, flashed side by side, someone bit the yellows dorsal, but after the initial meet, go less each day.
They still like to flash here and there.
Blue is boss.