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Stonefish

Synanceia
Synanceia verrucosa Hennig.jpg
Type species Synanceia verrucosa, 1801 illustration
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Synanceiidae
Genus: Synanceia
Bloch and J. G. Schneider, 1801

Synanceia is a genus of fish of the family Synanceiidae, the stonefishes, whose members are venomous, dangerous, and even fatal to humans. It is one of the most venomous fish known. They are found in the coastal regions of the Indo-Pacific.

Synanceia are primarily marine, though some species are known to live in rivers. Its species have potent neurotoxins secreted from glands at the base of their needle-like dorsal fin spines which stick up when disturbed or threatened. The vernacular name of the species, the stonefish, derives from the stonefish's ability to camouflage itself with a grey and mottled color similar to the color of a stone. Swimmers may not notice them, and may inadvertently step on them, triggering a sting. When the stonefish is disturbed, it may inject an amount of venom proportional to the amount of pressure applied to it.

The type species of the genus is Synanceia verrucosa, which includes the species Synanceia horrida that Linnaeus described as Scorpaena. The authors of Synanceia are Marcus Elieser Bloch and Johann Gottlob Schneider in the latter's republication of Systema Ichthyologiae iconibus cx illustratum (Illustrated catalog of Fishes), in 1801. The description was accompanied by an illustration by J. F. Hennig. The misspelling Synanceja is regarded as a synonym for this genus.

The following is a list of species in the genus:

Stonefish stings are both potentially lethal and extremely painful. The two most recommended treatments include the application of heat to the affected area and antivenom. People have used hot water (at a temperature no higher than 45 °C (113 °F)) applied to the injured area which has been found to destroy stonefish venom, and causes minimal discomfort to the victim. For more extreme cases, antivenom has been used. Vinegar can be found on some Australian beaches where there are frequent cases of people stepping on these fish, as the vinegar is said to lessen the pain.


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