hi my names bryan. i'm fairly new to the aquarium hobby. at the moment i have to red oscars and a common pleco. all 3 are over 12 inches. quick question to anyone who reads this that might be able to help me out. one of my red oscars stomach is bloated out while the other on is normal. i just recently noticed it and i'm kinda worried about it. i don't overfeed it. i do feed it krill on ocassion. is it possible that my red is getting blocked up because of the krilland if so what can i do to fix it. i would appreciate any help i can get. thanks