I have a snowflake morray thats around 20", I currently feed him 5 to 10 shrimp daily. I use uncooked store bought frozen shrimp, the kind for shrimp cocktail, I defrost and just toss em in the tank. Aside from that he eats occasional krill or crickets left over from my archers any thing else I should include in his diet? What do you feed your eel/ other brackish predators?