Stonefish

Stonefish are highly venomous marine fishes in the genus Synanceia, known for camouflage that makes them resemble rocks or coral.

Cryptic coloration: Coloration that reduces an organism’s visibility by blending it with its surroundings. Stonefish coloration helps conceal the body against reef and seabed backgrounds.
Synanceiidae: A family of marine fishes that includes stonefish and related venomous species. Stonefish belong to this family of scorpionfish relatives.
Antivenom: A preparation of antibodies used to neutralize venom in an envenomed person or animal. Antivenom may be considered for severe stonefish envenomation.
Estuarine stonefish: A species of stonefish, Synanceia horrida, found in Indo-Pacific coastal waters. It is a named species within the genus, distinct from the reef stonefish.
Venom: A toxic secretion delivered by an animal through a bite, sting, or other specialized structure. Stonefish venom is delivered through specialized dorsal spines.
Synanceia: A genus of venomous marine fishes commonly known as stonefish. This is the genus specified by the name stonefish in its strict biological sense.
Hot-water immersion therapy: A first-aid treatment that immerses a venomous marine sting in hot water to reduce pain. Heat can relieve pain after a stonefish sting while urgent medical assessment is arranged.
Reef stonefish: A species of stonefish, Synanceia verrucosa, associated with tropical Indo-Pacific reefs. It is the best-known species often meant by the common name stonefish.
Dorsal fin: A fin on the back of a fish that helps stabilize movement in water. Stonefish dorsal spines are modified fin elements that puncture predators or people.
Scorpaeniformes: A group of ray-finned fishes that includes scorpionfishes and their relatives. Stonefish are nested among these ray-finned fishes in modern classifications.

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