Percopsiformes
Temporal range: Campanian–recent[1]
Northern cavefish
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Superorder: Paracanthopterygii
Order: Percopsiformes
L. S. Berg, 1940
Type species
Percopsis omiscomaycus
(Walbaum, 1792)
Families

Amblyopsidae (cavefishes)
Aphredoderidae (pirate perch)
Percopsidae (trout-perches)

Synonyms
  • Percopsida
  • Salmopercae
  • Salmopercoidea
  • Heteropygii Tellkampf 1844

The Percopsiformes /pɜːrˈkɒpsɪfɔːrmiːz/ are a small order of freshwater teleost fishes measuring less than 20 cm in length, comprising the trout-perch and its allies.[2]: 319  It contains just ten extant species, grouped into seven genera and three families. Five of these genera are monotypic.[3]

They are generally small fish, ranging from 5 to 20 cm (2.0 to 7.9 in) in adult body length. They inhabit freshwater habitats in North America. They are grouped together because of technical characteristics of their internal anatomy, and the different species may appear quite different externally.[4]

Classification

References

  1. ^ Alison M. Murray; Donald B. Brinkman; Michael G. Newbrey; Andrew G. Neuman (2019). "Earliest North American articulated freshwater acanthomorph fish (Teleostei: Percopsiformes) from Upper Cretaceous deposits of Alberta, Canada". Geological Magazine. 157 (7): 1087–1096. doi:10.1017/S0016756819001328. S2CID 212927875.
  2. ^ Facey, Douglas E.; Bowen, Brian W.; Collette, Bruce B.; Helfman, Gene S. (2023). The Diversity of Fishes: Biology, Evolution and Ecology (Third ed.). Wiley. ISBN 9781119341918.
  3. ^ Froese, Rainer, and Daniel Pauly, eds. (2008). "Amblyopsiformes" in FishBase. December 2008 version.
  4. ^ Cohen, Daniel M. (1998). Paxton, J.R.; Eschmeyer, W.N. (eds.). Encyclopedia of Fishes. San Diego: Academic Press. p. 129. ISBN 0-12-547665-5.
  5. ^ Nelson, Joseph S.; Grande, Terry C.; Wilson, Mark V. H. (2016). Fishes of the World (5th ed.). John Wiley & Sons. ISBN 9781118342336.
  6. ^ van der Laan, Richard (2018). "Family-group names of fossil fishes". European Journal of Taxonomy. 466: 1–167. doi:10.5852/ejt.2018.466.
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