Hey, so I bought this Oscar two weeks ago. Day or two later I noticed his belly was kinda sunken in. At first I though oh it's because he hasn't really eaten the first couple days, but when he started eating more often the sunken belly didn't really go away. It just looks less sunken, it might be an internal parasite but the thing is his poop is not white or clear. It's the same color as his hikari cichlid gold pellets. But the strange thing about his poop is that there are air bubbles stuck to it and I've seen him poop once. He would pass some air bubbles out his butt while he poops, and the poop floats sometimes. I'm guessing from the air bubbles. Maybe he's just gassy or something but that doesn't really explain why his belly is a bit sukken. He(2-2.5inch) eats like a pig, he gets fed 3x a day,and tank is 95 gallons no tankmates. I poop vac daily(about 10g) along with weekly 30% water changes. Anybody can shed some light?