Current efforts to reduce lionfish populations aren't enough - much more must be done, experts report. Their computer models combine ocean currents and biological traits of lionfish to predict their spread. Lionfish have shown they can take over -- and in some cases devastate -- a coral reef ecosystem as they do not have any natural predators in the waters of the United States and the Caribbean. The research is showing that lionfish are spreading as all of our waters are connected by ocean currents....