mine is a hog, ive gotten it to eat almost anything i put in the tank save pellets. i use squid, octipus, clam, shrimp, smelt, crab, pinky mice, and other misc fish chunks.
My florida gar pretty much eats anything that hits the water as well. He loves cichlid pelets, earthworms, grasshoppers, crickets, kittens, hobos, you name it!