Dussumieri Tang circle

[Flounder's Reef]

I just received this Dussumieri Tang from liveaquaria.com divers-den. And it has this circle on it any thoughts I added the fish into qt and it is eating. Any thoughts?

 

[vetteguy53081]

I just received this Dussumieri Tang from liveaquaria.com divers-den. And it has this circle on it any thoughts I added the fish into qt and it is eating. Any thoughts?

May be damage from netting which would and should heal on its own. As a preventative measure from any infection, you can safely add Ruby rally pro to tank and assure its provide Good water quality and diet. This fish grows fairly quick in size.