clown fish with flukes?

[craig110768]

I have a clown fish that seems to be flickering quite a lot. I see no white spots on any fish. I think it my be flukes - would that be correct?
I did a freshwater dip for about 2 minutes with some formalin and put him back - he is better than before but he is still flickering especially when the lights are off.
Any suggestions. The fish area a real pain to catch as well. Has anyone got a good way of catching these fish.
Craig

 

[beth]

Is this a fish that you resently added to the tank? Or have you added any new fish to the tank resently?

 

[craig110768]

The fish has been in the tank a long time - 8 months - I added a wrasse about 1 month ago - that was the last one. He had been flickering prior to the last fish being added, but is worse now.

 

[craig110768]

Also noticed that my bulb in the UV filter had stopped working