Originally Posted by DiverDave
I'm not expert so do research but it might be Broolynella . symptoms are,, color fade, breathing slows, doesn't eat spits food back out. and is common in Clownfish.
Quite the contrary, with Brooklynella the respiration drastically increases as the fish often will gasp for air at the surface or they'll swim directly into a powerhead because their gills get filled with mucus. Along with the slime output which is a sure tell sign that it is Brooklynella.