I have a 4" common pleco who is the "mean fish of the tank", other fish of the tank include 5" peacock eel and 1" rubber lip pleco, tank size 20 gal. When i feed my peacock eel blood worms he goes crazy and pushes the peacock eel around, sucks on the peacock, and eats a ton of the blood worms. I give him a veggy wafer so he gets his veggies and a balanced diet. He eats a TON! like half a cute of blood worms and half a veggy wafer every night! Is it normal for him to get defensive during feeding? He only picks on the eel when its feeding time over wise he just chills on the bottom waiting for food.