Synanceia

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Synanceia
Ichthyologie; ou, Histoire naturelle des poissons (Plate 183) (6918426608).jpg
Synanceia horrida , 1796 illustration
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Scorpaenidae
Subfamily: Synanceiinae
Tribe: Synanceiini
Genus: Synanceia
Bloch and J. G. Schneider, 1801
Type species
Scorpaena brachion
Linnaeus, 1766 [1]
Synonyms [1]

Synanceia is a genus of ray-finned fish belonging to the subfamily Synanceiinae, the stonefish, which is classified within the family Scorpaenidae, the scorpionfish and relatives. Stonefish are the most venomous fish known; stings can be fatal to humans. [2] [3] They are found in the coastal regions of the Indo-Pacific. They are sometimes confused with the freshwater lionfish.

Contents

Taxonomy

Synanceia was first described as a genus in 1801 by the German naturalists Marcus Elieser Bloch and Johann Gottlob Theaenus Schneider with Scorpaena horrida, which had been described by Carl Linnaeus in 1766 from Ambon Island (Indonesia), as its type species. [1] [4] The genus Synanceia is classified within the tribe Synanceiini which is one of three tribes in the subfamily Synanceeinae within the family Scorpaenidae. [5] Despite this, other authorities regard Synanceiidae as a valid family and the Synanceiini as the subfamily Synanceiinae. [1] The genus name Synanceia is made up of syn, meaning "with", and angeíon, which means "cavity", an allusion to the large, cavernous heads of the species considered to be in the genus. [6]

Species

Synanceia verrucosa in a public aquarium Stone Fish at AQWA SMC2006.jpg
Synanceia verrucosa in a public aquarium

Synanceia contains the following species: [7] [4]

ImageScientific NameCommon NameDistribution
Synanceia alula (Eschmeyer & Rama Rao, 1973)Midget stonefishnorthern Indian Ocean to the Solomon Islands
Synanceia horrida Lembeh2.jpg Synanceia horrida (Linnaeus, 1766)Estuarine stonefishIndia to China, the Philippines, Papua New Guinea and Australia, and is also recorded in Vanuatu
Synanceia nana.JPG Synanceia nana (Eschmeyer & Rama Rao, 1973)Red Sea stonefishRed Sea and Persian Gulf
Synanceia platyrhyncha (Bleeker, 1874)Indonesia
Stone Fish at AQWA SMC2006.jpg Synanceia verrucosa (Bloch and J. G. Schneider, 1801)Reef stonefishRed Sea and Indo-Pacific
Synanceia quinque Matsunuma, Manjaji‑Matsumoto & Motomura, 2021Indonesia

Habitat and characteristics

Synanceia are primarily marine, and although some species are known to live in rivers, most live in coral reefs near the tropical Pacific and Indian oceans. The species has potent neurotoxins secreted from glands at the base of their needle-like dorsal fin spines which stick up when disturbed or threatened. [8] The vernacular name of the species, the stonefish, derives from its grey and mottled camouflage similar to the color of a stone. [9] Swimmers may not notice them and 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. [ citation needed ] Stonefish have the ability to extend sharp, specialized spines (lachrymal saber) as an additional defense mechanism. [10] [11]

Venom

The venom of Synanceia consists of a proteinaceous toxin called verrucotoxin (VTX), which modulates Ca2+ channel activity through the β-adrenoceptor-cAMP-PKA pathway. In humans, stings can cause intense pain, respiratory weakness, damage to the cardiovascular system, convulsions and paralysis; sometimes they can lead to death. The exact mechanism is not yet fully understood. [12]

Treatment of envenomation

Stonefish stings are extremely painful and potentially lethal. [13] The two most recommended treatments are the application of heat to the affected area and antivenom. Hot water (at a temperature of at least 45  °C (113  °F )) [14] applied to the injured area has been found to denature stonefish venom, and causes minimal discomfort to the victim. Antivenom is used in more extreme cases. Vinegar is found on some Australian beaches as it is said to lessen the pain. [15]

Stonefish stings in Australia

The stonefish is the most venomous known fish in the world [16] and stings can cause death if not treated. [17] Most stonefish stings occur as a result of stepping on the creature which forces venom into the foot, while it is less common for the fish to sting when it is picked up. [18] Stonefish stings can occur on the beach, not just in the water, since stonefish can survive out of the water for up to 24 hours. They are not easily seen as they look similar to rocks or coral. Stonefish antivenom is the second-most administered in Australia. [19] [ verification needed ]

Some Indigenous Australians have corroborees which involve re-enacting the death of someone who trod on the fish. The Aboriginal people of Northern Australia and the Great Barrier Reef have ways of preparing the fish for eating to avoid poisoning. [20]

After stonefish envenomation, the amount of anti-venom given depends on the number of puncture wounds from the stonefish spines. [21]

Number of incidents

1936 article from Melbourne newspaper The Argus about venomous stonefish. Poisonous Stone Fish article 1936.jpg
1936 article from Melbourne newspaper The Argus about venomous stonefish.

There were 25 cases of the use of antivenom for stonefish reported to Commonwealth Serum Laboratories for a one-year period between July 1989 and June 1990, with most from Queensland and four from the Northern Territory. [22] There were 14 calls to the Queensland Poisons Information System in 2008 regarding stonefish poison. [23]

Fatal incidents

NameAgeDateLocation
Joseph Leathom Wassell537 April 1915 Thursday Island, Australia [24] [20] [25]
name not given586 August 2010 Nago, Okinawa, Japan [26]

As food

Synanceia is edible to humans if properly prepared. The protein-based venom breaks down quickly when heated, and raw stonefish served as part of sashimi is rendered harmless simply by removing the dorsal fins which are the main source of venom. The fish are considered a delicacy in many parts of Asia, including south Japan, south Fujian, Guangdong in China, Hong Kong, and some parts of Vietnam. In the Hokkien-speaking area, they are considered delicacies and good for health. The meat of Synanceia is white, dense and sweet, and the skin is also edible. They are usually cooked with ginger into a clear soup, and sometimes served raw as sashimi.

Pop culture

In "Blue Lagoon (1980)," Emmeline Lestrange (played by Brooke Shields) unknowingly steps on a stonefish and is almost fatally poisoned. [27] The movie was filmed on Espiritu Santo island in Vanuatu, which is known for having stonefish which can grow up to 40 centimeters long. [28]

Related Research Articles

<span class="mw-page-title-main">Scorpaenidae</span> Family of fishes

The Scorpaenidae are a family of mostly marine fish that includes many of the world's most venomous species. As their name suggests, scorpionfish have a type of "sting" in the form of sharp spines coated with venomous mucus. The family is a large one, with hundreds of members. They are widespread in tropical and temperate seas but mostly found in the Indo-Pacific. They should not be confused with the cabezones, of the genus Scorpaenichthys, which belong to a separate, though related, family, Cottidae.

<span class="mw-page-title-main">South Australian cobbler</span> Species of fish

The South Australian cobbler, better known as the soldier but also known as the cobbler, devilfish or soldierfish, is a species of marine ray-finned fish, a waspfish, belonging to the subfamily Tetraroginae which is classified within the family Scorpaenidae, the scorpionfishes and their relatives. It is endemic to southern Australia. It is the only species in the monotypic genus Gymnapistes.

<i>Synanceia verrucosa</i> Species of fish

Synanceia verrucosa, the reef stonefish or simply stonefish, is a species of venomous, marine ray-finned fish, belonging to the subfamily Synanceiinae which is classified as being within the family Scorpaenidae, the scorpionfishes and their relatives. It is the most widespread species of stonefish, mostly found in shallow waters of the Red Sea and the Indo-Pacific. It possesses highly effective venom which can be lethal to humans. It is the type species of Synanceia.

<span class="mw-page-title-main">Synanceiinae</span> Family of fishes

Synanceiinae is a subfamily of venomous ray-finned fishes, waspfishes, which is classified as part of the family Scorpaenidae, the scorpionfishes and their relatives. These fishes are found in the Indo-Pacific oceans. They are primarily marine, though some species are known to live in fresh or brackish waters. The various species of this family are known informally as stonefish, stinger, stingfish and ghouls. Its species are known to have the most potent neurotoxins of all the fish venoms, secreted from glands at the base of their needle-like dorsal fin spines. The vernacular name, stonefish, for some of these fishes derives from their behaviour of camouflaging as rocks. The type species of the family is the reef stonefish.

<span class="mw-page-title-main">Apistinae</span> Family of fishes

Apistinae, the wasp scorpionfishes, is a subfamily of venomous, marine ray-finned fishes belonging to the family Scorpaenidae, the scorpionfishes and related species. These fishes are native to the Indian Ocean and the western Pacific Ocean.

<span class="mw-page-title-main">Venomous fish</span> Fish that have the ability to produce toxins

Venomous fish are species of fish which produce strong mixtures of toxins harmful to humans which they deliberately deliver by means of a bite, sting, or stab, resulting in an envenomation. As a contrast, poisonous fish also produce a strong toxin, but they do not bite, sting, or stab to deliver the toxin, instead being poisonous to eat because the human digestive system does not destroy the toxin they contain in their bodies. Venomous fish do not necessarily cause poisoning if they are eaten, as the digestive system often destroys the venom.

<i>Synanceia nana</i> Species of fish

Synanceia nana, the Red Sea stonefish or dwarf scorpionfish, is a species of venomous, marine ray-finned fish, a stonefish belonging to the subfamily Synanceiinae which is classified as being within the family Scorpaenidae, the scorpionfishes and their relatives. It is found in the northwestern Indian Ocean.

Although most species in the Red Sea pose no threat to humans, there are a few notable exceptions.

<span class="mw-page-title-main">Tetraroginae</span> Subfamily of fishes

Tetraroginae is a subfamily of marine ray-finned fishes, commonly known as waspfishes or sailback scorpionfishes, belonging to the family Scorpaenidae, the scorpionfishes and their relatives. These fishes are native to the Indian Ocean and the West Pacific. As their name suggests, waspfishes are often venomous; having poison glands on their spines. They are bottom-dwelling fish, living at depths to 300 metres (980 ft). These creatures usually live in hiding places on the sea bottom.

<i>Synanceia horrida</i> Species of fish

Synanceia horrida, the estuarine stonefish, hollow-cheek stonefish, horrid stonefish, rough stonefish or true stonefish, is a species of venomous, marine ray-finned fish, a stonefish belonging to the subfamily Synanceiinae which is classified as being within the family Scorpaenidae, the scorpionfishes and their relatives. It is a benthic fish which is found in the Indo-Pacific region. This species is considered to be one of the most dangerous venomous fish in the world. It is a popular exhibit in public aquaria and is found in the private aquarium trade.

<span class="mw-page-title-main">Animal attacks in Australia</span>

Wildlife attacks in Australia occur every year from several different native species, including snakes, spiders, freshwater and saltwater crocodiles, various sharks, cassowaries, kangaroos, stingrays and stonefish and a variety of smaller marine creatures such as bluebottles, blue-ringed octopus, cone shells and jellyfish.

<i>Inimicus</i> Genus of fishes

Inimicus is a genus of marine ray-finned fishes, it is one of two genera in the tribe Choridactylini, one of the three tribes which are classified within the subfamily Synanceiinae within the family Scorpaenidae, the scorpionfishes and their relatives. These venomous, benthic fishes are found on sandy or silty substrates of lagoon and seaward reefs, in coastal regions of tropical oceans. The ten described species are collectively known by various common names, including ghoul, goblinfish, sea goblin, spiny devilfish, stinger, and stingfish.

<span class="mw-page-title-main">Bullrout</span> Species of fish

The bullrout, also commonly called freshwater stonefish or kroki, is a pale yellowish to dark-brown coloured fish that lives in tidal estuaries and slow-flowing streams in eastern Australia, from Southern New South Wales to northern Queensland, Australia. It has on a very infrequent occurrence been caught at sea. Its spines are venomous. It is the only member of the genus Notesthes. It is often confused with the true stonefish.

<span class="mw-page-title-main">Pitted stonefish</span> Species of fishes

The pitted stonefish, also known as the Pacific monkey-fish, is a species of venomous ray-finned fish, a stonefish be longing to the subfamily Synanceiinae of the family Scorpaenidae, the scorpionfishes and their relatives. It is the only species in the monotypic genus Erosa and is found in the eastern Indian Ocean and the western Pacific Ocean.

Leptosynanceia is a monotypic genus of ray-finned fish belonging to the subfamily Synanceiinae, the stonefishes, which is classified within the family Scorpaenidae, the scorpionfishes and relatives, its only species is Leptosynanceia asteroblepa which is called the mangrove stonefish in Malaysia. This species native to the brackish and fresh waters of Southeast Asia. This species grows to a total length of 23 centimetres (9.1 in). This species is an extremely dangerous fish whose venom can cause a human to die within 1 to 2 hours after contact. The pain caused by the venom is described as "agonizing".

<span class="mw-page-title-main">Blackfin stonefish</span> Genus of fishes

The blackfin stonefish is a species of venomous ray-finned fish, a stonefish be longing to the subfamily Synanceiinae of the family Scorpaenidae, the scorpionfishes and their relatives. It is the only species in the monotypic genus. It is native to the western Indian Ocean where it occurs in areas with muddy bottoms. This species grows to a total length of 13 centimetres (5.1 in).

<span class="mw-page-title-main">Stargazing stonefish</span> Genus of fishes

The stargazing stonefish is a species of stonefish native to the Indian Ocean and the western Pacific Ocean where it is found on muddy bottoms in estuaries. This venomous species is also a minor component of local commercial fisheries. This species grows to a length of 8 centimetres (3.1 in) SL. This species is the only known member of the genus Trachicephalus.

<i>Scorpaenopsis diabolus</i> Species of fish

Scorpaenopsis diabolus, the false stonefish, false scorpionfish or the devil scorpionfish, is a species of venomous marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. It has venomous spines and lives in the tropical Indian and Pacific Oceans as well as in the Red Sea. It is a bottom-dwelling predator that relies on its camouflage to catch passing prey.

A fish sting is an injury which may include envenomation and mechanical trauma. There are a number of species of venomous fish including the stonefish.

<span class="mw-page-title-main">Daruma stinger</span> Species of venomous ray-finned fish

The daruma stinger, also known as the North-western stonefish, is a species of venomous ray-finned fish, a stonefish belonging to the subfamily Synanceiinae of the family Scorpaenidae, the scorpionfishes and their relatives. It is the only species in the monotypic genus Dampierosa and is endemic to Australia.

References

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Further reading