Photo: Lionfish swimming among soft corals

If attacked, a lionfish delivers a potent venom via its needle-like dorsal fins. Its sting is extremely painful to humans and can cause nausea and breathing difficulties, but is rarely fatal.

Photograph by Wolcott Henry

Map

Map: Lionfish range

Lionfish Range

Fast Facts

Type:
Fish
Diet:
Carnivore
Average life span in the wild:
Up to 15 years
Size:
11.8 to 15 in (30 to 38 cm)
Weight:
Up to 2.6 lbs (1.2 kg)
Group name:
School
Did you know?
A lionfish will often spread its feathery pectoral fins and herd small fish into a confined space where it can more easily swallow them.
Size relative to a tea cup:
Illustration: Lionfish compared with tea cup

Pretty much everything about the venomous lionfish—its red-and-white zebra stripes, long, showy pectoral fins, and generally cantankerous demeanor—says, "Don't touch!"

The venom of the lionfish, delivered via an array of up to 18 needle-like dorsal fins, is purely defensive. It relies on camouflage and lightning-fast reflexes to capture prey, mainly fish and shrimp. A sting from a lionfish is extremely painful to humans and can cause nausea and breathing difficulties, but is rarely fatal.

Lionfish, also called turkey fish, dragon fish and scorpion fish, are native to the reefs and rocky crevices of the Indo-Pacific, although they've found their way to warm ocean habitats worldwide.

The largest of lionfish can grow to about 15 inches (0.4 meters) in length, but the average is closer to 1 foot (0.3 meters).

Lionfish are popular in some parts of the world as food, but are far more prized in the aquarium trade. Their population numbers are healthy and their distribution is growing, causing some concerned in the United States, where some feel the success of this non-indigenous species presents human and environmental dangers.

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