Does my Lionfish ever eat?

[Scavenger]

I had a dwarf lion that was very hard to train to frozen food. What I did was cut the business end off a fishing hook so it was just a straight shaft then impale a silver side on it. (head to tail)
Dropped it into tank and stood back about 10 feet and just wiggled it in the current to simulate an injured fish. Lion hit it and stripped it off hook everytime. About 3 days later all it took was dropping the silverside into tank.
I don't recommend skewering and wiggling in face. The lion will become scared of food rather than drawn to it in my opinion.