Fundulus

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Fundulus
Northern studfish (F. catenatus)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cyprinodontiformes
Family: Fundulidae
Genus: Fundulus
Lacépède, 1803
Type species
Fundulus mudfish
Lacépède, 1803[1]
Species

See text

Fundulus is a

toothcarps (Cyprinodontiformes), and therein the large suborder Cyprinodontoidei. Most of its closest living relatives are egg-laying, with the notable exception of the splitfin livebearers (Goodeidae
).

They are usually smallish; most species reaching a length of at most 4 in (10 cm) when fully grown. However, a few larger species exist, with the giant killifish (

F. catenatus
) growing to twice the genus' average size.

Many of the 40-odd species are commonly known by the highly ambiguous name "

topminnow
" (a catch-all term for Fundulidae). "Studfish" is a quite unequivocal vernacular name applied to some other Fundulus species; it is not usually used to refer to the genus as a whole.

Fundulus have evolved to occupy a wide range of aquatic ecosystems, including marine, estuarine, and freshwater, making it a good comparative model system for studying evolutionary divergence between marine and freshwater environments.[2] To assist with this research, Oxford Nanopore long-read reference genomes have been sequenced for F. xenicus, F. catenatus, F. nottii, and F. olivaceus[3].

Species

Russetfin Topminnow (F. escambiae)

There are currently 39 recognized species in this genus:[4]

The Cuban killifish (Cubanichthys cubensis, a pupfish) was formerly placed in Fundulus.

References

Wikimedia Commons has media related to Fundulus.
  1. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Fundulus". Catalog of Fishes. California Academy of Sciences. Retrieved 23 September 2019.
  2. PMID 18071578
    .
  3. PMID 32556169
    .
  4. ^ Froese, Rainer and Pauly, Daniel, eds. (2012). Species of Fundulus in FishBase. August 2012 version.
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