What is wrong with my clownfish?

[Aclman88]

So I adopted a tank setup from a reefer who was leaving the country and I noticed from the beginning the clownfish had sunken cheeks and body and looked a little old (he said it was around 4 years old which for a clown is getting up there). Today, I noticed a white growth (or skin deterioration) on his head. I also noticed white, thing stringy poop.



Any ideas what the issue is?



Tank has 0 ammonia and nitrites and nitrates in the 10-20 range.

 

[Big G]

The white & string poop is a symptom of internal pathogens. The white filmy area could be a bacterial infection resulting from the internal issues.