I suggest getting frozen market prawns and tilapia filets from the market and feeding him those. They cannot digest chicken and it is bad for them. I suggest not using feeders either. These fish grow extremely large and it is cheaper and more healthy to just feed shrimp/prawns and tilapia. Make sure to stuff hikari pellets inside the filets and shrimp/prawns so he gets all his vitamins, protein, and nutrients.
hehe ..and the oscars r fighting with him =( he doesnt fight bk though.. ny advices?