I have one Redtail Catfish about 2 inches long in a 10 gallon tank with one Tiger Oscar and Pleco. I know the tank is overcrowded but, I'm getting a bigger tank soon. The 1st problem is the Catfish is fat. He's really bloated. I been feeding him bloodworms and beef heart for 2 weeks now. Is it bad that he's like this? The 2nd problem is that the Pleco (4 inches) is attacking him. This only happens when the Catfish enters his hiding spot. What should I do?