What I did with my lion is forcefully push the thawed silversidees down with a skewer, not attached to the skewer at all, and the lion watches, and then lunges at the "live" fish. He is now eating 3 or 4 silversides a day...(yes he has me spoiled). I figure if he is out and following me, he is hungry. When he is sated he will go backk to his darker hiding place, and then come out later in the evening. After him living on live goldfish his life, I am quite pleased with the progress I have made with him. There are even days when he comes out to feed 2 or 3 times, but I have never seen his tummy bulge from overfeeding, so I hope I am ok with this. Just my 2cents......................