HAHAHAHA (not laughing at you) i just had a thought. I remember reading about these little meat clumps in the shape of fish that you use to feed preditors.. They are attatched to some thread and a little stick in the shape of a fishing rod. I read about them in a fish magazine everythime i see them or think of them they make me laugh.
Try those not only they may work but if they do it will be fun to feed your lionfish.