Pterois is a genus of venomous marine fish, commonly known as Lionfish, naive to the Indo-Pacific. The Lionfish is a predatory fish hunting small fish, but its venom is capable of being to larger creatures.

The Lionfish is a popular aquarium fish around the world, although the Lionfish is better kept in tanks with lots of space and few other fish. The Lionfish can live to around 16 years in the wild and often live longer if looked after well in captivity.

There are around 8 different recognized species of Lionfish that are found in the Pacific Ocean. The Lionfish is natively found in coastal waters are round rocky crevices and coral reefs where there are lots of smaller fish for the Lionfish to eat and also places for the Lionfish to hide.