What kind of fish would do well in a small reef with a yellow tail damsel for a companion? I thought for sure that a maroon clown would whip him into submission but no, this little guy is tough. Maybe a larger Maroon Clown? It is also possible that the clown just never was healthy. I felt like I was rescuing him when I bought him from a fish store with lots of dying fish that I won't name. He ate the first day I put him in and that was the last time I saw him eat. Maybe the blue devil just wouldn't let him eat?