As said live blackworms! Mine loves them. Getting them on mysis is a plus as well. As stated earlier the Hikari brand are smaller and easier for butterfly fish. Eating out of the water column is funny for my guy. He gets the food most of the time but sometimes it looks like his depth perception is off and he misses the food completely. Beautiful fish that usually really needs quarantining to get to eat.
Good luck!
Good luck!


