Here is a pic of my Volitan Lionfish in the tank with my Mexican Dragon and Yellow Head Eels. The Mexican Dragon tries to get all of the food but I use a feeding stick to make sure they all get fed (and I don't lose any fingers).
She is in with two eels, a Mexican Dragon and a Yellow Head eel. Everyone seems to get along. The Lionfish is really mellow, she likes to hangout in her cave or hang upside down beside the overflow, with her head pointing downwards (I don't know why but she seems healthy).