Forktail blenny, Meiacanthus atrodorsalis. These fish have large canines associated with venom glands that serve as defense weapons.

- Image ID: KAB00H
Paulo Oliveira / Alamy Stock Photo
Image ID: KAB00H
But unlike most venomous fish, which inject toxins through their fins, fang blennies deliver venom through their bite. Furthermore, fang blenny venom does not appear to produce potent pain. Instead, it causes a sudden drop in blood pressure, which might temporarily stupefy predators. Cebu, Philippines