These guys new additions to the tank? How do you find all these randoms work together? I'm trying to keep mine to a mostly peacock/hap tank and it works pretty well, but also makes some of the fish colour down.
Some of those fish are pretty small for the colouring, are any of them hormoned that you know of? I've bought a few in the past, and usually although they fade initially they do get the same colouring back eventually.
PS what kinda goby is that?