Hi:
I'm not sure what a spotted lionfish is. Do you mean an antennata( spotfin lion?) or a dwarf fuzzy ? I ask becuz the species of lion will dictate the tankmates. The dwarf speices get no bigger than 6-7" , while the mid bodies and large bodied lions get 10"+.
Rule of thumb... a lion can/will eat anything which will fit into its mouth comfortably. A fish of equal size to the lion is borderline safe, bigger than the lion probably safe.
AS mentioned lionfish are whimps and will allow other fish to pick on them, before they fight back, if you notice any harassing tankmates, remove then.
I don't recommend anemones w/ lions lions are clumsy swimmers and use zone of safety to hide in. Meaning if the anemone provides cover the lin will stupidly try to use it to hide under.
AS far as "weening
lionfish over the others have given you good advice, essentially, starve the lion for a few days than then introduce a fish on a stick, or shrimp on a stick. The food must look alive and it will be your job to convince the lion that its alive. I always use small silverside fish as my weening fish, sinc they have eyes.
Try to skip the FW feeders, if you must feed live foods, ghost shrimp are the better of the evils, but not for long term. As mention FW feeders are deficient in essentially fats and worse most FW feeders are fatty carp. Long term feeding of these fish to lion have been associated w/ fatty liver disease and shortened life spans
HTH
frank
[ April 28, 2002: Message edited by: FMarini ]</p>