Perciformes

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Perciformes
Temporal range: 100.5–0 Ma
Late Cretaceous to Recent
דקראים.jpg
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Superorder: Acanthopterygii
Order: Perciformes
Bleeker, 1859
Type species
Perca fluviatilis
Linnaeus, 1758

Perciformes, also called the Percomorpha or Acanthopteri, are the most numerous order of vertebrates, containing about 41% of all bony fish. Perciformes means "perch-like", they belong to the class of ray-finned fish, and comprise over 10,000 species found in almost all aquatic ecosystems.

The order contains about 160 families, which is the most of any order within the vertebrates,[1] it is also the most variably sized order of vertebrates, ranging from the 7-mm (1/4-in) Schindleria brevipinguis to the 5-m (16.4 ft) marlin in the Makaira genus. They first appeared and diversified in the Late Cretaceous.

Among the well-known members of this group are perch and darters (Percidae), sticklebacks (Gasterosteidae), rockfish (Sebastidae), snailfish Liparidae, and icefish Nototheniidae[2].

Characteristics[edit]

The dorsal and anal fins are divided into anterior spiny and posterior soft-rayed portions, which may be partially or completely separated. The pelvic fins usually have one spine and up to five soft rays, positioned unusually far forward under the chin or under the belly. Scales are usually ctenoid, although sometimes they are cycloid or otherwise modified.

Taxonomy[edit]

Classification is controversial, as traditionally defined before the introduction of cladistics, the Perciformes are almost certainly paraphyletic. Other orders that should possibly be included as suborders are the Scorpaeniformes, Tetraodontiformes, and Pleuronectiformes. Of the presently recognized suborders, several may be paraphyletic, as well, these are grouped by suborder/superfamily, generally following the text Fishes of the World.[1][3][4]

Perciformes display at the National Museum of Natural History.
Nelson 2006[1] Betancur-Rodriguez et al. 2016[5]

References[edit]

  1. ^ a b c Nelson, J. S. (2006). Fishes of the World (4 ed.). Hoboken, NJ: John Wiley & Sons. ISBN 978-0-471-25031-9. 
  2. ^ 4
  3. ^ Froese, Rainer, and Daniel Pauly, eds. (2015). "Perciformes" in FishBase. August 2015 version.
  4. ^ "ADW: Perciformes". http://animaldiversity.ummz.umich.edu. Animal Diversity Web.  External link in |work= (help)
  5. ^ R. Betancur-Rodriguez, E. Wiley, N. Bailly, A. Acero, M. Miya, G. Lecointre, G. Ortí: Phylogenetic Classification of Bony Fishes – Version 4 (2016)