New Fish Tank Tips: Don’t place your tank next to a window. Sunlight entering your aquarium will cause major headaches in the form of green algae. Direct sunlight will also cause your tank water temperature to increase.
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The four-eyed fishes are a genus, Anableps, of fishes in the family Anablepidae. They have eyes raised above the top of the head and divided in two different parts, so that they can see below and above the water surface at the same time. Like their relatives, the onesided livebearers, four eyed fishes only mate on one side, right-“handed” males with left-“handed” females and vice versa. These fish inhabitat freshwater and brackishwater and are only rarely coastal marine. They originate from lowlands in southern Mexico to Honduras and northern South America.
These fish spend most of their time at the surface of the water. Their diet mostly consists of terrestrial insects which are readily available at the surface, however they may consume other foods such as other invertebrates, diatoms, and small fishes.
These fish will group differently depending on the species. A. anableps commonly congegrates in schools. A. microlepis also is gregarious, but restricts its schools to about a dozen individuals; it is also recorded to be found singly or as couples.
A. anableps is also known for the ability to survive out of water exposed to air, such as during low tide.
The maximum length of these species is up to 32 cm TL in A. microlepis, making this species the largest in the order Cyprinidontiformes.
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