Anableps


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Anableps

 

(four-eyed fishes), a genus of viviparous fishes of the family Anablepidae of the order Cyprinodontiformes. The body length is 15–20 cm (rarely to 30 cm). The cornea and retina of the eyes are divided by an epithelial septum into upper and lower divisions. The upper part is adapted for vision above the water. Hence, the fishes, which usually swim near the surface, are able to see over and under the water simultaneously. There are two known species of four-eyed fishes, inhabiting lagoons in Central America and northern South America. The fishes feed on small invertebrates, mainly flying insects, found in the water or above the water’s surface. Fertilization is internal; one to five fry, measuring 4–6 cm long, are born.

REFERENCES

Zhizn’ zhivotnykh, vol. 4, part 1. Moscow, 1971.
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References in periodicals archive ?
Piatigorsky, "Adaptive differences in the structure and macromolecular compositions of the air and water corneas of the "four-eyed" fish (Anableps anableps)," FASEB Journal, vol.
Piatigorsky, "Abundant corneal gelsolin in Zebrafish and the "four-eyed" fish, Anableps anableps: possible analogy with multifunctional lens crystallins," Experimental Eye Research, vol.
This is the case of Poptella compressa, Pygocentrus nattereri, Serrasalmus rhombeus, Cynodon gibbus, Hemiodus argenteus, Aspredo aspredo, Ageneiosus ucayalensis, Hemiodontichthys acipenserinus, Loricariichthys acutus, Pterygoplichthys punctatus, Pseudoplatystoma punctifer, Strongylura marina, Anchovia surinamensis, Pterengraulis atherinoides, Anableps anableps, and Pachypops fourcroi.