That's why these guys are often called "rockmover wrasse".How big is he? Small enough for a fish trap? You really can catch fish from your tank with a tiny, barbless hook baited with a bit of their favorite food. Everyone laughs, but I've heard back from several people who caught their fish this way. (Usually damsels). If you decide to go fishing, no license required, get back to me and I'll pass on the fine points. I've done this for years and have never lost a fish.