Synanceiinae is a

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...

venomous Venom or zootoxin is a type of toxin produced by an animal that is actively delivered through a wound by means of a bite, sting, or similar action. The toxin is delivered through a specially evolved ''venom apparatus'', such as fangs or a sti ...

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or hor ...

es, waspfishes, which is classified as part of the family Scorpaenidae, the scorpionfishes and their relatives. These fishes are found in the

Indo-Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the ...

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

neurotoxin Neurotoxins are toxins that are destructive to nerve tissue (causing neurotoxicity). Neurotoxins are an extensive class of exogenous chemical neurological insultsSpencer 2000 that can adversely affect function in both developing and mature ner ...

s of all the fish venoms, secreted from glands at the base of their needle-like

dorsal fin A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through conv ...

spines. The

vernacular A vernacular or vernacular language is in contrast with a "standard language". It refers to the language or dialect that is spoken by people that are inhabiting a particular country or region. The vernacular is typically the native language, n ...

name, stonefish, for some of these fishes derives from their behaviour of camouflaging as rocks. The type species of the family is the estuarine stonefish (''

Synanceia horrida ''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 classifi ...

'').

Taxonomy

Synanceiinae, or the family Synanceiidae, was first named and recognised as a grouping of related taxa by the

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...

naturalist William John Swainson in 1839. The 5th edition of ''

Fishes of the World ''Fishes of the World'' by the American ichthyologist Joseph S. Nelson (1937–2011) is a standard reference for fish systematics. Now in its fifth edition (2016), the work is a comprehensive overview of the diversity and classification of the ...

'' treats this grouping as a subfamily within the family Scorpaenidae, dividing the subfamily into the three

tribes The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English is in the discipline of anthropology. This definition is contested, in part due to conflic ...

: Minoini, Choridactylini and Synanceiini. Other authorities differ in their treatment of this grouping, regarding Synanceiidae as a valid family within the suborder

Scorpaenoidei Scorpaenoidei is a suborder of ray-finned fishes, part of the order Scorpaeniformes, that includes the scorpionfishes, lionfishes and velvetfishes. This suborder is at its most diverse in the Pacific and Indian Oceans but is also found in the A ...

which they include in the order

Perciformes Perciformes (), also called the Percomorpha or Acanthopteri, is an order or superorder of ray-finned fish. If considered a single order, they are the most numerous order of vertebrates, containing about 41% of all bony fish. Perciformes means ...

, treating the tribes as subfamilies. In addition, some authorities, e.g ''

Catalog of Fishes Catalog of Fishes is a comprehensive on-line database and reference work on the scientific names of fish species and genera. It is global in its scope and is hosted by the California Academy of Sciences. It has been compiled and is continuously up ...

'', define the Synanceiidae to include other related taxa not included by ''Fishes of the World'', the

Apistinae 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. T ...

and

Tetraroginae 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 W ...

, which ''Fishes of the World'' places in the Scorpaenidae; as well as the subfamilies Aploactininae, Eschmeyerinae, Gnathanacanthinae, Pataecinae and Perryeninae which are also included, whereas ''Fishes of the World'' treats these as families. The taxon name is based on that of the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

Synanceia ''Synanceia'' is a genus of ray-finned fish belonging to the subfamily Synanceiinae, the stonefishes, which is classified within the family Scorpaenidae, the scorpionfishes and relatives. Stonefishes are venomous, dangerous, and fatal to humans ...

'', which was described by Bloch & Schneider in 1801, combining ''syn'', meaning "with", and ''angeíon'', which means "cavity", an allusion to the large, cavernous heads of species placed in the genus.

Tribes and genera

The subfamily Synanceiinae is classified into three tribes and nine genera: *

Minoini ''Minous'', is a genus of marine ray-finned fishes, it is the only genus in the tribe Minoini, one of the three tribes which are classified within the subfamily Synanceiinae within the family Scorpaenidae, the scorpionfishes and their relativ ...

Jordan Jordan ( ar, الأردن; tr. ' ), officially the Hashemite Kingdom of Jordan,; tr. ' is a country in Western Asia. It is situated at the crossroads of Asia, Africa, and Europe, within the Levant region, on the East Bank of the Jordan Rive ...

& Starks, 1904 ** '' Minous'' Cuvier, 1829 * Choridactylini Kaup, 1859 ** '' Choridactylus''

Richardson Richardson may refer to: People * Richardson (surname), an English and Scottish surname * Richardson Gang, a London crime gang in the 1960s * Richardson Dilworth, Mayor of Philadelphia (1956-1962) Places Australia * Richardson, Australian Cap ...

, 1848 ** '' Inimicus'' Jordan & Starks, 1904 *

Synanceiini Synanceiini commonly known as stonefishes, is a tribe of venomous ray-finned fishes classified within the subfamily Synanceiinae, the stonefishes, part of the family Scorpaenidae, the scorpionfishes and their relatives. These fishes are found ...

Swainson, 1839 ** '' Dampierosa'' Whitley, 1932 ** '' Erosa'' Swainson, 1839 ** '' Leptosynanceia''

Bleeker Bleeker is a Dutch occupational surname. Bleeker is an old spelling of ''(linnen)bleker'' ("linen bleacher").Pseudosynanceia'' Day, 1875 ** ''

Bloch Bloch is a surname of German origin. Notable people with this surname include: A–F * (1859-1914), French rabbi *Adele Bloch-Bauer (1881-1925), Austrian entrepreneur *Albert Bloch (1882–1961), American painter * (born 1972), German motor journal ...

& Schneider, 1801 ** '' Trachicephalus'' Swainson, 1839

Characteristics

Synanceiinae species are characterised by having bodies which are not covered in scales, with the exception of the embedded scales along their

lateral line The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial ...

s and on some other areas of the body. The body is covered with glands in the skin. They have large heads. They typically do not have a

swim bladder The swim bladder, gas bladder, fish maw, or air bladder is an internal gas-filled Organ (anatomy), organ that contributes to the ability of many bony fish (but not cartilaginous fish) to control their buoyancy, and thus to stay at their curren ...

. There are

venom Venom or zootoxin is a type of toxin produced by an animal that is actively delivered through a wound by means of a bite, sting, or similar action. The toxin is delivered through a specially evolved ''venom apparatus'', such as fangs or a sti ...

glands at the base of the spines in the

, the spines acting like

hypodermic syringe A syringe is a simple reciprocating pump consisting of a plunger (though in modern syringes, it is actually a piston) that fits tightly within a cylindrical tube called a barrel. The plunger can be linearly pulled and pushed along the inside o ...

s to inject the venom. The venom is

neurotoxic Neurotoxicity is a form of toxicity in which a biological, chemical, or physical agent produces an adverse effect on the structure or function of the central and/or peripheral nervous system. It occurs when exposure to a substance – specificall ...

and is among the most toxic of venoms produced by fishes. It has been known to be fatal to humans.

Distribution and habitat

Synanceiinae species are found in the Indian and Western Pacific Oceans, including the Red Sea. They are found in marine, brackish and freshwater habitats.

References

{{Taxonbar, from=Q1416828 Ray-finned fish subfamilies Taxa named by William John Swainson