Skin Disorder Diagnosis

Approximately 2 days ago I noticed a round lesion begin to develop on the top portion of the Dog Face Puffer. Today, the lesion appears to have increased in size. I have noticed a change in his behavior today. He does eat, however, he seems more reserved than usual. I've attempted to research similar scenario's, however, all that I find under "light round spot skin disorder," is of course Cryptocaryon irritants. Any thoughts, insight or information on what this may be is greatly appreciated. An image is included below.

 

If it's a puffer question I always take it to member schackmel, perhaps pm her I bet she has some insight.

 

Try here, I have looking around and this so far this is one of the better sites to try to help diagnosis what your fish may have.

Marine Fish Diseases and Parasites

Aquarium FD - Skin / Gill Flukes - Disease Identification, Diagnosis & Treatment

Fish Disease and Treatment

Good luck with this, please keep us Up 2 date .

 

yuk looks like a fungus of some sort..