My Poor Clown Fish

[rsisvixen]

Firstly if you don't have a skimmer or adequate water flow your oxygen lvls are probably too low.

Secondly while certain parasites do show up on the body of a fish like ich they can take up residence in the gills as well which will also cause breathing issues.

Lastly a dwarf angel is probably the last fish you add to a tank as they tend to be the most aggressive, and 2 tangs in a 90 gallon isn't really recommended.