Butterfly Cod (Pterois volitans)

what does this mean?  First Aid for envenomation by this species  show the distribution of these species

These fish are sometimes kept as aquarium pets, a fact which has contributed to the freqency of injuries attributed to them. When a person is stung, immediate, severe pain is experienced. Other effects include discoloration around the stung area, sweating, nausea and vomiting. These fish have been responsible for deaths in countries other than Australia.

Pterois volitans
Photo courtesy Sandra Renee