I've gotten them to eat frozen bloodworms and cut up earthworm before though I had some other fish in the tank that ate those same food items so I guess they learned by example. I'm sure it helped that all the fish would crowd the surface and nail anything as soon as it hit the water whether it was live or dead, eventually the leaf fish were up there as well as well as the belonesox I had in there with them (another notoriously picky feeder). Nice fish btw, that big leaf is a monster!