Great Fish.. The Antenneta Lionfish could be considered one of the dwarfs, in comparison to Russels or Volitan.
Mine wasn't hard to eat prepared food at all.. freeze-dried krill and a number of other foods it would take. I had more problems with the pygmy lionfish than the dwarf fuzzy or antenetta. However, any Lionfish can be a finicky eater..
30g, BY ITSELF, would be a minimum tank size, for a juvenile.. Eventually it will outgrow that tank. Eventually it will eat all of those suggested tankmates.
30g is not alot of water volume and Lionfish have a big bio-load.. You will get ammonia spikes really easy, and high nitrates if you don't know how to fix it. This will be your biggest downfall.. You won't be able to sustain any sort of good water quality with a messy fish like that. Ammonia is more toxic in a saltwater tank, than FW..
I surely would not suggest this fish for that size tank, especially with any tankmates.. Although an expert Lionfish keeper could possibly keep a single one in a 30g tank, I would suggest atleast 90g for any species of Lionfish if you have never kept one.
Not to mention, cleaning a small tank with a venomous fish can be scary.
Heres a pic, enjoy.
