Agonidae

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Agonidae
Aspidophoroides monopterygius.jpg
Alligatorfish (Aspidophoroides monopterygius)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Suborder: Cottoidei
Superfamily: Cottoidea
Family: Agonidae
Swainson, 1839
Subfamilies & genera [1]

See text

Agonidae is a family of small, bottom-dwelling, cold-water marine fish. Common names for members of this family include poachers, Irish lords, sea ravens, alligatorfishes, starsnouts, hooknoses, and rockheads. They are notable for having elongated bodies covered by scales modified into bony plates, and for using their large pectoral fins to move in short bursts. The family includes about 59 species in some 25 genera, some of which are quite widespread.

Contents

The pelvic fins are nearly vestigial, typically consisting of one small spine and a few rays. The swim bladder is not present.

At 42 centimetres (17 in) in length, the dragon poacher (Percis japonica) is the largest member of the family, while Bothragonus occidentalis is 7 cm (2.8 in) long as an adult; most are in the 20–30 cm range.

Agonidae species generally feed on small crustaceans and marine worms found on the bottom. Some species camouflage themselves with hydras, sponges, or seaweed. They live at 1,280 m (4,200 ft) deep, with only a few species preferring shallower, coastal waters. All but one species are restricted to the Northern Hemisphere. [2]

Taxonomy

The family Agonidae was first proposed as a family in 1839 by the English naturalist William John Swainson. [3] The Agonidae is classified within the superfamily Cottoidea in the suborder Cottoidei in the order Scorpaeniformes in the 5th edition of Fishes of the World [4] but other authorities states that if Scorpaeniformes is excluded from Perciformes then Perciformes is recovered as paraphyletic and so classify this family within the infraorder Cottales within the suborder Cottoidei of the Perciformes. [5] A number of taxa which were previously classified within the Cottidae were reclassified within the Agonidae which meant that the Cottidae was confined to the freshwater sculpins. [6]

Subfamilies and genera

The Agonidae is divided into the following subfamilies and genera: [4] [3] [7]

Related Research Articles

<span class="mw-page-title-main">Sculpin</span> Fish of the superfamily Cottoidea

A sculpin is a type of fish that belongs to the superfamily Cottoidea in the order Scorpaeniformes. As of 2006, this superfamily contains 7 families, 94 genera, and 387 species.

<span class="mw-page-title-main">Scorpaeniformes</span> Order of fishes

The Scorpaeniformes are a diverse order of ray-finned fish, including the lionfishes and sculpins, but have also been called the Scleroparei. It is one of the five largest orders of bony fishes by number of species, with over 1,320.

<span class="mw-page-title-main">Cottidae</span> Family of ray-finned fishes

The Cottidae are a family of fish in the superfamily Cottoidea, the sculpins. It is the largest sculpin family, with about 275 species in 70 genera. They are referred to simply as cottids to avoid confusion with sculpins of other families.

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

The Abyssocottinae are a subfamily of ray-finned fishes in the family Cottidae, the sculpins. They are known commonly as the deep-water sculpins. The entire subfamily is endemic to Lake Baikal in Siberia.

<span class="mw-page-title-main">Gasterosteoidei</span> Suborder of ray-finned fishes

Gasterosteoidei is a suborder of ray-finned fishes that includes the sticklebacks and relatives, the 5th edition of Fishes of the World classifies this suborder within the order Scorpaeniformes.

<span class="mw-page-title-main">Rhamphocottidae</span> Family of fish

Rhamphocottidae is a family of ray-finned fishes belonging to the superfamily Cottoidea, the sculpins. The species in this family occur in the North Pacific Ocean.

<span class="mw-page-title-main">Hexagrammidae</span> Family of ray-finned fishes

Hexagrammidae, the greenlings, is a family of marine ray-finned fishes belonging to the suborder Cottoidei in the order Perciformes. These fishes are found in the North Pacific Ocean.

<i>Cottus</i> (fish) Genus of fishes

Cottus is a genus of the mainly freshwater ray-finned fishes belonging to the family Cottidae, the typical sculpins. They are often referred to as the "freshwater sculpins", as they are the principal genus of sculpins to be found in fresh water. They are native to the Palearctic and Nearctic.

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

Pholidae is a family of marine ray-finned fishes, known as gunnels, in the scorpaeniform suborder Zoarcoidei. These are fishes of the littoral zone and are mainly found in North Pacific Ocean, with two species found in the North Atlantic Ocean and Arctic Ocean.

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

Stichaeidae, the pricklebacks or shannies, are a family of marine ray-finned fishes in the suborder Zoarcoidei of the order Scorpaeniformes. Most species are found in the North Pacific Ocean with a few in the North Atlantic Ocean.

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

The Hemitripterinae is a subfamily of the scorpaeniform family Agonidae, known as sea ravens or sailfin sculpins. They are bottom-dwelling fish that feed on small invertebrates, found in the northwest Atlantic and north Pacific Oceans. They are covered in small spines.

<span class="mw-page-title-main">Zoarcoidei</span> Suborder of ray-finned fishes

Zoarcoidei is a suborder of marine ray-finned fishes belonging to the order Perciformes. The suborder includes the wolffishes, gunnels and eelpouts. The suborder includes about 400 species. These fishes predominantly found in the boreal seas of the northern hemisphere but they have colonised the southern hemisphere.

<span class="mw-page-title-main">Aulorhynchidae</span> Family of ray-finned fishes

Aulorhynchidae, the tube-snouts, is a small family of marine ray-finned fishes belonging to the suborder Gasterosteoidei in the order Perciformes. These fishes are found in the northern Pacific Ocean.

<i>Cryptacanthodes</i> Genus of fishes

Cryptacanthodes is a genus of marine ray-finned fishes belonging to the monogeneric family Cryptacanthodidae, commonly referred to as wrymouths. Three of the four species are found in the Pacific Ocean with one species native to the western Atlantic Ocean where they are benthic fishes, tunneling through soft substrates. It is currently the only known genus in its family.

<i>Bothragonus</i> Genus of fishes

Bothragonus is a genus of marine ray-finned fishes belonging to the family Agonidae, the poachers and related fishes. It is the only genus in monotypic subfamily Bothragoninae. These fishes are found in the northern Pacific Ocean.

<i>Blepsias</i> Genus of fishes

Blepsias is a genus of marine ray-finned fishes belonging to the family Agonidae, the poachers and related fishes. These fishes are found in the coastal northern Pacific Ocean from Japan to California.

<span class="mw-page-title-main">Cottoidei</span> Suborder of ray-finned fishes

Cottoidei is a suborder of ray-finned fishes which, according to the 5th edition of Fishes of the World, is placed within the order Scorpaeniformes, alongside the scorpionfishes, flatheads, eelpouts, sticklebacks and related fishes.

<span class="mw-page-title-main">Jordaniidae</span> Family of marine ray-finned fishes

Jordaniidae is a small family of marine ray-finned fishes belonging to the order Perciformes. These fishes are found in the eastern North Pacific Ocean.

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

Hypsagoninae is a subfamily of marine ray-finned fishes belonging to the family Agonidae, part of the sculpin superfamily Cottoidea. These fishes are found in the North Pacific Ocean.

<span class="mw-page-title-main">Cyclopteroidea</span> Superfamily of ray-finned fishes

Cyclopteroidea is a superfamily of ray-finned fishes within the order Scorpaeniformes. The superfamily comprises 2 families, the Cyclopteridae, the lumpsuckers, of the cool northern seas and the widespread Liparidae, the snailfishes. A common feature shared by these families is that they typically have the pelvic fins modified to form a disc shaped sucker.

References

  1. Froese, Rainer; Pauly, Daniel (eds.). "Family Agonidae". FishBase . December 2012 version.
  2. Eschmeyer, William M. (1998). Paxton, J.R.; Eschmeyer, W.N. (eds.). Encyclopedia of Fishes. San Diego: Academic Press. p. 179. ISBN   0-12-547665-5.
  3. 1 2 Richard van der Laan; William N. Eschmeyer & Ronald Fricke (2014). "Family-group names of Recent fishes". Zootaxa. 3882 (2): 001–230. doi: 10.11646/zootaxa.3882.1.1 . PMID   25543675.
  4. 1 2 J. S. Nelson; T. C. Grande; M. V. H. Wilson (2016). Fishes of the World (5th ed.). Wiley. pp. 467–495. ISBN   978-1-118-34233-6. Archived from the original on 2019-04-08. Retrieved 2022-12-21.
  5. Ricardo Betancur-R; Edward O. Wiley; Gloria Arratia; et al. (2017). "Phylogenetic classification of bony fishes". BMC Evolutionary Biology. 17 (162): 162. Bibcode:2017BMCEE..17..162B. doi: 10.1186/s12862-017-0958-3 . PMC   5501477 . PMID   28683774.
  6. W. Leo Smith & Morgan S. Busby (2014). "Phylogeny and taxonomy of sculpins, sandfishes, and snailfishes (Perciformes: Cottoidei) with comments on the phylogenetic significance of their early-life-history specializations". Molecular Phylogenetics and Evolution. 79: 332–352. Bibcode:2014MolPE..79..332S. doi:10.1016/j.ympev.2014.06.028. PMID   25014569.
  7. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Agonidae". Catalog of Fishes . California Academy of Sciences . Retrieved 21 December 2022.