Lionfish is the expert here but I know feeder fish are great for a treat but shouldn't be used as the sole food. I use the saltwater multi-pack (frozen). If you are unfamilular with this, it is a prepared food containing, krill, squid, brine shrimp, and more. Mine loves it. He is doing great and eats like a pig. I feed him feeder guppies about once per week. I hope this helps. I would suggest doing some reading before you get a lionfish. There are many things you should know before you take him. for example: you know that they have venome in their spines and that a sting is extremly painful so cleaning your tank requires some caution, feeding requirements, size of your tank and its inhabitants are important too. If you already know these things, thats great, I just want to make sure you know a little more information before you jump.
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