Four Eyed Fish (Anableps anableps)


The Four Eyed Fish or Anableps is an extremely unusual brackish water fish found along the coastline of Northeastern South America. Their name comes from the fact that these fish have specially adapted eyes with a membrane that effectively splits each eye into two parts, allowing them to simultaneously see above and below the waters surface. Due to this unique feature, Four Eyed fish are typically found floating at the surface, seeking out insects and other food items which might fall toward the water. Like many brackish water fish they regularly move between pure fresh and pure marine waters but will do best in moderate-strength brackish water (15 to 20 ppt) in the aquarium. A social species, they are usually found in groups in the wild and will do well when kept together in the aquarium. This specialized fish was once a somewhat common import but has been absent in the hobby for years; only recently has this species become available again in the trade by way of Brazil.

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Quantity5 - 910 - 1920 - 4950 +


Four Eyed Fish (Anableps anableps)

Origin: Wild Brazil
Locale: Coastal Pará State
Diet: A surface predator in nature, will take most protein-rich floating foods in the aquarium
Adult Size: 8″
Recommended Tank Size: 55 gallons+
Compatibility: Generally peaceful, but should be kept with similarly sized fish

Preferred Water Parameters
pH:                          7.5 – 8.2
Salinity:                 1.00 – 1.025
Temp:                     76-82F
Ammonia:              0ppm
Nitrite:                    0ppm
Nitrate:                  <30ppm