Well, for the lion, get a feeding stick or some tongs, or something, and put some SQUID (VERY STRONG SMELLING) on it and wiggle it in front of the lion to give it the impression it is live. This way has never failed on me, and I acclimated probably 30 or so lions for the 2 years I volunteered at my LFS. And for the butterflyfish, try cyclopeeze to get it to START eating. Even the freeze-dried stuff seems to work well. Again, I have acclimated several of these as well, at that LFS, and that way only failed once. Aurigas are one of the hardier butterflies....it shouldnt be too difficult to eventually get them eating flake.