corydora adolfoi coloration

[Ericbarber]

I recently received an order of corydora adolfoi, and one of the corydora has developed some white coloration along with what appears to be a very faint pink line under the skin at the base of the tail (very hard to see). The fish is acting normal, schooling with the other fish and eating fine, I was just wondering if this was something to concerned about. I took a few pictures of the fish in question. Should I take the fish out of the tank and put in a tank of its own, is this something I can treat?