Spotted morays (Gymnothorax moringa) are just about as nasty as they come, they will eat anything and are extremely excitable when they smell food. It will eat your lion, get it out now, even if you stuff the eel full with food it will still try to swallow what it catches at night. Believe me, I had a 22-24" one that ate two medium size 6" and 7" volitans. Now I keep a juvenile with an undulate trigger, and the eel is the boss.