i have had experience with fumanchu lionfish i still have mine i got him to eat frozen krill with in the first week that i got him he was also very small only like 1.5 mabye 2.0 inches but now hes probably 3 or 3.5. i used ghost shrimp to start off then with a little bit of patience i got him eating krill off of a feeding stick and now he doesnt even need the feeding stick i just throw it in the tank and he will get it. i hope this helps...good luck with yours