National geographic zebra lionfish

Zebra lionfish
Caution! The Zebra Lionfish is venomous.
This fish grows to a maximum length around 25 cm (10 in).
The lionfish is a beautiful creature with a distinct appearance, but you shouldn't get too close. While these fish aren't aggressive, they can sting accidentally if they mistake you for a predator. If you're fishing for lionfish, use a hand net and always wear gloves when handling the fish.
A Lionfish sting from one of their spines is similar to a snake bite. The area around the punctured area swells up quickly causing tons of pain.

National Geographic