I have had 2 blue linkias for a little over 4 months now. IMO you need a lot of LR and a stable tank to keep them alive. One of mine has grown from about 5" to 8". I have never seen it eating anything other than apparently grazing on LR algae etc. I have never tried to feed them anything. They are very slow movers and in my tank the food would be gone before they got to it. Acclimation is very important but if your tank is not EXTREMELY stable they will die regardless of how you acclimated it. Take extra care to maintain Alk, PH, temp and oxygen levels in the water. I have pics of them in my gallery.