The Lion Fish an unwanted and invasive species was accidentally introduced to Caribbean waters . The fish with no natural predator has decimated the local fish among the coral reefs in the Caribbean from Grenada to Jamaica.

Quote from an expert

One thing is for certain, the lionfish invasion is probably the worst man-made ecological disaster ever witnessed and it has yet to completely play itself out. 
Invasive lionfish are out-breeding, out-competing and out-living native fish stocks and other marine species. The consequences impact the food security and economies affecting over a hundred million people.

Scuba divers are leading the fightback by hunting and catching the fish in organizing hunting parties or hunting them as part of their  Scuba tours. They need our help and encouragement . 

For examples of their work go to :