Thanks. I assume the bright neck you are referring to is the Tri. I bought her from the lfs, and she was labeled a Trimac, and they had another tank labeled FH. I don't know if she was pure, but when she got her breeding colors, she got really bright. Most of my fish have not seen feeders. I used to feed them on occasion until I lost a C. Saxitilis to furunculosis from goldfish. I even quarantined them for 3 weeks. I think the only ones that have had feeders are the RD and maybe the Loiselli. The devil eats the back half of the feeder, but leaves the head half, and I end up scooping them out of the tank.