[bernardlonergan]

Hello,
I just added a yellow eye tang to my tank and my yellow tang that was already in there went a little violent. The yellow tang would swim backwards and wave his tail in the other yellow eye tang's face. I took a look at the yellow eye and on his head it looks like there is a white circle about the size of a pea but flush to the skin on his head. Today that white circle on the head is totally gone. What was that white circle thing on the yellow eye tang??? What's my next move??? The fish are not fighting anymore. HELP !!!

 

[crvz]

What size tank is it? It's usually not a good idea to add another tang of the same genus to an already established tank.