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Lionfish

lionfish

Lionfish
Photo by Meritt Thomas · CC0

About

Lionfish are venomous reef fish with bold stripes and wide, fan-like fins. In this app the group includes the Red lionfish, Indian lionfish, and Zebra lionfish.

How to tell it apart

Lionfish are easy to know by their bold striped pattern and wide, fan-like fins with long spines. Members of the group differ mainly in stripe pattern and the shape of their fin spines.

Appearance

Lionfish have brown or maroon stripes across the head and body, with fleshy tentacles above the eyes and below the mouth. Their pectoral fins spread wide like fans, and their dorsal fin has long, separate venomous spines. Adults can grow up to about 45 centimetres.

Habitat

Lionfish are native to the Indian Ocean and western Pacific, living around the edges of shallow coral reefs, lagoons, and rocky bottoms. They can also live in murky inshore water and harbours, from shallow depths down to past 100 metres.

Behaviour

Lionfish are territorial and can act aggressively toward other reef fish, and even toward divers. They rest during the day and hunt most actively in the morning.

Diet

Lionfish eat mostly small fish, invertebrates, and molluscs. They use fine control of their swimming to line up prey head-first before swallowing it whole.

Breeding

Female lionfish release egg clusters wrapped in mucus, each holding up to 15,000 eggs, and can lay about two million eggs a year.

Did you know?

Lionfish blow jets of water at prey before striking, which confuses the smaller fish and turns it to face the lionfish head-first, making it easier to swallow.

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