''Scorpaena'' is a widespread

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 ...

of marine

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 ...

belonging to the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Scorpaenidae The Scorpaenidae (also known as scorpionfish) 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 venom ...

, the scorpionfishes.

Taxonomy

''Scorpaena'' was first described as a genus in 1758 by

Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the ...

in the 10th Edition of his ''

Systema Naturae ' (originally in Latin written ' with the ligature æ) is one of the major works of the Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the system, now known as binomial nomen ...

''. In 1876

Pieter Bleeker Pieter Bleeker (10 July 1819 – 24 January 1878) was a Dutch medical doctor, ichthyologist, and herpetologist. He was famous for the ''Atlas Ichthyologique des Indes Orientales Néêrlandaises'', his monumental work on the fishes of East Asia ...

designated ''S. porcus'' as the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

of the genus. The genus name is based on the Greek word for a

scorpion Scorpions are predatory arachnids of the order Scorpiones. They have eight legs, and are easily recognized by a pair of grasping pincers and a narrow, segmented tail, often carried in a characteristic forward curve over the back and always end ...

, ''skorpaina'', an allusion to the venomous spines Linnaeus mentioned in his description of ''S. scrofa''.

Species

The 65 recognized species in this genus are:

Characteristics

''Scorpaena'' scorpionfishes have a very bony head which is armed with numerous spines. There is a horizontal bony ridge beneath the eyes with 1-4 spines. They have an occipital pit. The uppermost spine on the

preoperculum This glossary of ichthyology is a list of definitions of terms and concepts used in ichthyology, the study of fishes. A B C ...

is the longest. There are patches of teeth on the roof of the mouth and at its sides. There are 12 spines and between 7 and 10 soft rays in the

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 ...

while the

anal fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as se ...

has 3 spines and 5 soft rays. There are 16 to 21 fin rays in the

pectoral fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as ...

with some of the upper rays being branched in adults. THey have relatively large scales and the scales on the body are smooth. The lateral line is complete and its scales are tubed. They vary in size from a

total length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish ...

of in ''S. pascuensis'' to in ''S. mystes''.

Distribution and habitat

''Scorpaena'' scorpionfishes are found in the tropical and warm temperate zones of the Atlantic, Indian and Pacific Oceans. They are demersal fishes occurring in a number of habitats but are typically found in rocky or coralline habitats.

Biology

''Scorpaena'' scorpionfishes are solitary,

ambush predators Ambush predators or sit-and-wait predators are carnivorous animals that capture or trap prey via stealth, luring or by (typically instinctive) strategies utilizing an element of surprise. Unlike pursuit predators, who chase to capture prey us ...

which use their cryptically patterned, irregularly shaped bodies to camouflage themselves on the substrate. They have large mouths and will eat prey up to half their own size, the vortex created by the sudden opening of the mouth drawing the prey in. They have venomous spines which can inflict serious injuries on humans.

Fisheries

Scorpaena scorpionfishes are caught by recreational and commercial fisheries in some parts of the world. The flesh is regarded as very palatable.

References

External links

* Smith, J.L.B. 1957
The fishes of the Family Scorpaenidae; Part 1: The sub-family Scorpaeninae. Ichthyological Bulletin; No. 4
Department of Ichthyology, Rhodes University, Grahamstown, South Africa. * Smith, J.L.B. 1957
The fishes of the Family Scorpaenidae; Part 2: The sub-families Pteroinae, Apistinae, Setarchinae and Sebastinae. Ichthyological Bulletin; No. 5
Department of Ichthyology, Rhodes University, Grahamstown, South Africa. * Smith, J.L.B. 1958
Fishes of the families Tetraogidae, Caracanthidae and Synanciidae from the Western Indian Ocean with further notes on Scorpaenid fishes. Ichthyological Bulletin; No. 12
Department of Ichthyology, Rhodes University, Grahamstown, South Africa. {{Taxonbar, from=Q1069779 Scorpaenini Venomous fish Extant Eocene first appearances Marine fish genera Taxa named by Carl Linnaeus