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Bony fish · Cyprinodontiformes · Anablepidae

Four-eyed Fish

Anableps anableps

Least Concern

The species is abundant and widely distributed; it faces no significant short-term risk.

Spotted something wrong?

The four-eyed fish is a surface-dwelling fish of up to 30 cm that lives in estuaries and mudflats in northern South America. It does not have four eyes: each eye is divided horizontally by a band of tissue, so that the upper half looks into the air and the lower half into the water, and the animal swims with the dividing line exactly at the surface, seeing what happens above and below at the same time. It hunts insects, small crustaceans and fish, and also swallows mud to make use of the diatoms in it. It is live-bearing, and the young are already some 5 cm long at birth.

Weight

up to 400 g

Size

up to 30 cm

Diet

Omnivore

Combines animal and plant food depending on availability.

Freshwater
12countries8parks

Fun facts

  • anatomíaIts eyes are divided in two, letting it see above and below the surface at the same time.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (bony fish)
Habitat and environment
Estuaries, mangroves and intertidal mudflats along the Atlantic coast of northern South America; it enters and stays for long periods in stretches of fresh water
Size at birth
4.5-5.2 cm in total length
Sexual maturity
Length at first maturity 13 cm

Sources consulted: Wikipedia (es): Anableps anableps

Where to find it

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The pins mark the parks where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented.

Related species

Other species in the catalogue with the most in common with Four-eyed Fish — same habitat, park, country, tags or family.

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See full glossary
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See its range on the interactive map→
Tobago Main RidgeTrinidad and Tobago
Lençóis MaranhensesBrazil
TayronaColombia
Los RoquesVenezuela
MorrocoyVenezuela
Corales del Rosario y San BernardoColombia
MochimaVenezuela
BrownsbergSuriname
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CountriesVenezuela
ParksTobago Main RidgeTrinidad and Tobago
TagsOmnivore
Omnivore
Fish
Freshwater

South America11

North America1

Venezuela
Colombia
Brazil
Suriname
Trinidad and Tobago
Argentina
Argentina
Bolivia
Brazil
Colombia
Ecuador
French Guiana
Guyana
Paraguay
Peru
Suriname
Venezuela
Trinidad and Tobago