yeah its def parasites then, go ahead and treat for it RIGHT AWAY to have any chance of him recovering though if hes already stopped eating it could go either way, and make sure to do ALL THREE treatments not just two, and if he does start to eat then chop off a little piece of one of the extra tablets and put in cup with little bit of tank water (just enough to get it to dissolve) and then soak his pellets in it for like 30min and feed them to him (net food out dont put extra medicine water back in tank, and also a test kit is definitely a must have, even when nothing is wrong its always a good idea to check your levels to make sure everything is ok, if i were you i would go ahead and get the API test kits for ammonia, nitrite and nitrate when you go to get the JUNGLE PARASITE clear GOOD LUCK hopefully he will pull through