i agree with the other comments.... but the light color may not be much of a concern. My clown trigger i have had for 2 yrs has ALWAYS gone what i call the dark side and the light side. It has it's regular color but quite often during the day his over all tone will go darker as he parades around the tank and quite often after it's night feeding it will roam the tank slower and in a very lighter over all tone. Lots of fish have this feature of brighter, darker and lighter colors and it may not be a concern there. I have also had that clown have somewhat cloudy eye 2x in the 2 yrs and i just bumped up my water changes to keep water quality up and it went away on it's own. But indeed please post the other info being asked for.