Anablepidae

Taxobox
name = Anablepidae

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image_width = 240px
image_caption = Four-eyed fish, "Anableps" sp.
regnum = Animalia
phylum = Chordata
classis = Actinopterygii
ordo = Cyprinodontiformes
familia = Anablepidae
familia_authority = Garman, 1895
subdivision_ranks = Subfamilies
subdivision = Anablepinae
*"Anableps"
*"Jenynsia"Oxyzygonectinae
*"Oxyzygonectes"

Anablepidae is a family of freshwater and brackish water fishes living on river estuaries from southern Mexico to southern South America.cite book | title = Fishes of the World | last = Nelson | first = Joseph, S. | publisher = John Wiley & Sons, Inc. | year = 2006 | id = ISBN 0471250317] There are three genera with sixteen species: the four-eyed fishes (genus "Anableps"), the onesided livebearers (genus "Jenynsia") and the white-eye, "Oxyzygonectes dovii". Fish of this family eat mostly insects and other invertebrates.

One-Sided Reproduction

Fish in the subfamily Anablepinae are ovoviviparous. Curiously, they only mate on one side, right-"handed" males with left-"handed" females and vice versa.cite web | url = http://www.wetwebmedia.com/BrackishSubWebIndex/anableps.htm | title = Four Eyes and More, the Family Anablepidae | publisher = WetWebMedia.com | accessdate = 2007-03-30] The male of most species in the family has specialized anal rays which are greatly elongated and fused into a tube called a gonopodium associated with the sperm duct which he uses as an intromittent organ to deliver sperm to the female.

References

Other References

* Berra, Tim M. (2001). "Freshwater Fish Distribution". San Diego: Academic Press. ISBN 0-12-093156-7

External links

*
* [http://www3.sympatico.ca/tp.bridges/anableps2p1.html Anableps anableps]