ooo!! cleaver!! Yeah, my LFS told my not to buy damsels unless they were my last fish so that this wouldnt happen. What kind of angle is it? It would be a shy breed like a coral beuty angel. But i believe the damels agression. My clown fishies would never go near the net though. They have fish traps too. But they probably are a pretty pennie for a piece of plastic. Im not sure though, so i would talk. What about moving all the live rock to one side, and once he gets out of it (damles being schooling fish he will want to go in open water, or even when he comes out to feed) try trapping him on one side with a tank devider. This would easily be replaced with a sized pice of plexie glass or something of the sort. It should be easier then. Ive never tried any of these though.. jsut some suggestions... Back to homeowrk for me though! and let me know how they turn out!!