How much does a lionfish eat a day?
Once your fish is eating non-live foods on a regular basis then you can avoid using live foods altogether. Using live foods seems to cause some specimens to become more aggressive and overly excited. They can break their jaw on objects in the aquarium while striking at live prey. I have seen this happen with several fish so please err on the side of safety. Accidents like this may be avoided by dimming the lighting at feeding time. Lionfish in the wild do most of their feeding during the dawn and dusk hours. Their vision may be better when the lighting is less intense.