I was in Lebanon last year, and there were a few articles about lionfish, encouraging locals to eat the fish and fishermen were saying that in the past few years they were catching a lot of lionfish, and much less of any other species usually found, it was bad enough that there was a movement started by an NGO to promote the fish as a source of food to local restaurants. I`m hoping more divers in the area take notice and start doing their part.Given that in Greece the sea has been overfished (and illegal fishing plagues the country), additional stresses on the remaining fish population is not good.
Spearfishing on scuba is illegal but I hope that an exception will be made for lionfish.
In the past year, I've been seeing many more pictures of lionfish in Greece on social media which I take as an indicator that this is a problem about to explode.
I didn't perceive there to be that many fish in Belize and I blame the lionfish.
considering the proximity of Greece, I would say you're right about the lionfish starting to be a huge problem, at least in the eastern Mediterranean.