I have a crappie that I caught in a 10 gallon tank and have been having trouble getting him to eat. I realize that you need to ween them onto regular fish feed but he won't eat anything. I've had him for about a week and all he's eaten is a small goldfish that I put in the tank. I've tried meal worms, fish eggs, and even added a couple more small goldfish yesterday but he's not eating anything. In fact the goldfish have been swimming along side him like they're friends! What can I feed him? Thank you in advance.