Harpagifer

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Spiny plunderfishes
Harpagifer antarcticus.jpg
Harpagifer antarcticus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Suborder: Notothenioidei
Family: Harpagiferidae
Gill, 1861 [1]
Genus: Harpagifer
J. Richardson, 1844
Type species
Batrachus bispinis
Synonyms [1]

Family

  • Harpagiferoidae Gill, 1861

Harpagifer, the spiny plunderfishes is a genus of marine ray-finned fishes, belonging to the family Harpagiferidae, it is the only genus in this monotypic family. They are found in the Southern Ocean.

Contents

Taxonomy

The genus Harpagifer was described in 1844 by the Scottish naval surgeon, naturalist and Arctic explorer John Richardson, with Batrachus bispinis, a species which had been described in 1801 by Johann Reinhold Forster, as its type species by monotypy. [2] In 1961 the American ichthyologist Theodore Nicholas Gill realised that these fishes were different enough from other Notothenioid fishes that they should be placed in their own family which called Harpagiferoidae, [3] although this is now spelled Harpagiferidae. [2] [1] The name of the genus Harpagifer compounds harpagos which means "hook" and fero meaning "to bear", a reference to the spine on the operculum of H. bispinis. [4]

Species

There are currently 12 recognized species in this genus: [5]

Characteristics

Harpagifer spiny plunderfishes have a relatively short and compressed body, lacking scales and with a large broad head. They typically have a first and second dorsal fin, the first dorsal fin is situated over the base of the pectoral fin and has between two and five flexible spines. The second dorsal fin is long based and contains 18-26 soft rays, the 2 dorsal fins are sometimes fused or separated by an incision. The anal fin has 16-19 soft rays. The large pectoral fins have a fan lkike shape and contain 15-18 fin rays while the well developed pelvic fins are on the throat and have a short, blunt spine and 5 branched rays. The rounded caudal fin has 9-14 branched rays. The jaws are equal in length with the upper jaw being protractible and both jaws have bands of small conical teeth with no clearly canine-like teeth and no teeth away from the jaws. There is a single nostril on each side of snout and no barbels on the chin. The opercle and subopercle have strong spines. The only scales on the naked body are on the two lateral lines. [6] These are relatively small fishes which have standard lengths between 7 and 9.5 cm (2.8 and 3.7 in). [5]

Distribution, habitat and biology

Harpagifer spiny plunderfishes are largely restricted to Subantarctic islands, although there is one species which occurs along the coasts of the Antarctic Peninsula and another which is found around the southern tip of South America. They are small, benthic fishes which prey on small crustaceans. Most species are littoral but they can be found as deep as 180 m (590 ft). They are slow growing fish, reaching sexual maturity between the ages of 3 and 5 years old and around a total length of 7.5 cm (3.0 in) and they have been observed building nests and guarding their broods. The females may have 70-100 eggs per gramme of their total weight. They are important to the ecology of the areas where they are found as they are common prey for larger fishes and sea birds. [6]

See also

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References

  1. 1 2 3 Richard van der Laan; William N. Eschmeyer & Ronald Fricke (2014). "Family-group names of Recent fishes". Zootaxa. 3882 (2): 001–230. Retrieved 3 October 2021.
  2. 1 2 3 Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Harpagifer". Catalog of Fishes . California Academy of Sciences . Retrieved 3 October 2021.
  3. ↑ Gill, T.N. (1861n). "Synopsis of the Harpagiferoids". Proceedings of the Academy of Natural Sciences of Philadelphia. 13: 510–512.
  4. ↑ Christopher Scharpf & Kenneth J. Lazara, eds. (12 April 2021). "Order Perciformes: Suborder Notothenoididei: Families Bovichtidae, Pseaudaphritidae, Elegopinidae, Nototheniidae, Harpagiferidae, Artedidraconidae, Bathydraconidae, Channichthyidae and Percophidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 3 October 2021.
  5. 1 2 Froese, Rainer and Pauly, Daniel, eds. (2021). Species of Harpagifer in FishBase . June 2021 version.
  6. 1 2 J.-C. Hureau (1990). "Harpagiferidae Spiny plunderfishes". In O. Gon and P.C. Heemstra (eds.). Fishes of the Southern Ocean. South African Institute for Aquatic Biodiversity. ISBN   9780868102115.
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