Lionfish have 18 venomous spines capable of inflicting a painful sting, much like a severe bee sting. Sometimes there are more serious symptoms, such as nausea and dizziness, but these may be more connected to the human stress response than the venom itself. As the lionfish population continues to grow, so does the possibility of injuries through envenomation to fishermen, divers, and others whom otherwise handle or come into contact with lionfish. It is essential that health and safety messages be provided to all sectors of the community.
Lionfish have 13 dorsal spines that run the length of the fish's back, 3 anal spines, and 2 pelvic spines, all capable of causing envenomation (coloured red, see above). Each spine is covered by a thin sheath of skin which, when depressed, shreds a small pair of venom glands near the base of the spine (see below). The venom then travels from the glands through small grooves in the spine towards the wound. Aside from the pain caused by the venom, a person risks secondary infection, which may require antibiotic treatment, if the wound is not cleaned. If the person has other health issues, such as certain allergies, an envenomation may have more severe consequences.