Indo-Pacific lionfish (Pterois volitans, Pterois miles) have spread from the Caribbean Sea to Northern United States coastal waters. In some areas of the Atlantic Ocean they are now as abundant as native grouper species. Sightings of lionfish in park waters occurred as early as 2008, yet lionfish were rare until 2010. They are actively removed from park waters whenever possible.
Threats posed by lionfish:
Lionfish are voracious predators that compete for food resources of commercially and ecologically important fish including snapper and grouper.
Lionfish have venomous spines that can cause intense pain, swelling, headache, nausea, paralysis and convulsions. They are not timid.
Lionfish have few natural predators in the Atlantic Ocean.