I just bought a krill weened fu Manchu lion fish last week. My question is can they live on this alone or do I need to be feeding him something else? It was a little tricky to get him to eat at first, I had to use a shish-kabob and stick the shrimp on the end and practically smack him in the head with it to get him to take it and that was after 3 days of starvation! If anyone can help me out I would appreciate it. Thanks