Yellow Tang Help!

[Funky_Fish14]

That could be possible, yes.

No, the fish did not appear to be breathing heavily and their lips looked fine.

I dont have a phosphate test kit, so unfortunately I have not been able to test for it.

Thanks for the suggestions Harvey. I know that its definetly not the clown that is the cause because he is the biggest wuss. Im going to attempt to removed the crabs to the refugium, there is already one that is the same type as the one thats in the tank up there. Actually, come to think of it, could the sally lightfoot kicking the fish cause internal injuries? He actually strikes out quite hard and fast, not in an attempt to catch the fish but simply to hit it.

I think I have a pistol shrimp in the tank aswell. I can hear popping during the day or night. My mantis (seperate tank) makes a much different cracking noise, and I would figure that my engineer gobies would be dead seeing as the sounds come out of the rocks they are living under.

Once I get my RO system up and running, I will be doing more water changes, but I also might tear down the tank and restart from scratch.

Thanks for the help and suggestions everyone!

Chris