Hi, recently I have noticed that my largest of my three blue/green chromis has not been acting normal. He swims at an angel with his nose facing downwards, he goes towards the food and grabs it, but he spits it out right away, and his poop yesterday was clear and stringy with white dots in it. He tends to hover in the middle of the tank and breathing is a tad fast. His appearance is otherwise normal and his color is not faded.
I'm wondering if this might be an internal parasite, and if so, how do I get rid of it?
My tank is 5 months old (I've had the chromis for 4 months) and is 65 gallon FOWLR
Ps. I don't know if this makes a difference, but I had just finished treating my one spot foxface for flukes.