Human: Why is it called a lionfish? Assistant: 
The lionfish is called a lionfish because of its lion-like mane. The lionfish is a venomous fish that is native to the Indian and Pacific Oceans. It is a member of the scorpionfish family, and it has a long, venomous stinger on its tail. The stinger is used to stun prey, and it is also used to defend itself against predators.