I doubt that Lionfish will ever be completely eradicated from the western Atlantic Ocean. They are here to stay. But divers and fishermen are becoming increaslingly aware of the threat they pose to local fauna, and have been actively killing them. Lionfish are easy to kill by spear or hook-and-line, and one only needs to be careful to avoid the venomous spines. One fewer Lionfish is one fewer Lionfish!
A few months ago, I became aware that Lionfish meat is good eating, and that some divers had been collecting the fish and selling them to local restaurants. Just like other fishes, Lionfish made the menus when they were available, and only in a few places.
REEF.org has been active in organizing Lionfish 'roundups.' Those folks get it! Today, I found out they have published a new Lionfish cookbook. The book offers 45 recipes and includes background information about this invasive species. It seems like a win-win-win project: reduce Lionfish populations, provide safe and noncontrovercial food, and all proceeds go toward conservation. And, the photos make the fish look awfully yummy!