Groupers Step Up to the Lionfish Challenge?

The first footage of a native grouper eating an invasive lionfish is making the rounds on social media.  One of the reasons people think lionfish have been so successful at invading is that they lack natural predators in their invaded range. This video is exciting because it may indicate that predators are starting to see lionfish as prey targets. Congrats (and thanks) to the divers who caught this on tape.