NOAA
Noaa: Lionfish Discovery Story
The National Ocean Service Education Association has put together this well supported set of articles outlining the cause and resulting effects of invasive species, primarily the Lionfish. This link begins with looking at the story of...
Other
The Lionfish Info Sheet: Captive Care and Home Husbandry
This exhaustive look at the Lionfish provides an amazing amount of information on it's characteristics, habitat and much more. References and many colorful images are provided as well.
A-Z Animals
A Z Animals: Animal Facts: Lionfish (Pterois Volitans)
Learn facts about the Lionfish, including details on its appearance, habitat, breeding, behavior, and predatory lifestyle.
Denver Zoo
Denver Zoo: Lionfish
The Denver Zoo provides an in-depth overview of the lionfish highlighting its habitat, range, adaptations, diet, physical characteristics, and more.