Largescale Foureyes Anableps anableps

Like the mudskippers, the Largescale Foureyes prefers fresh or brackish waters along coasts and mangroves. It is native to the southern Caribbean through to Brazil's Amazon coast. It is a strange-looking, slim fish growing to 30cm (one foot) long. They can breathe out of the water on mudflats, although not for as long as mudskippers.

The Foureyes do not have four eyes but have four pupils, each of their two eyes being split by a membrane and each having two pupils so that the fish, which usually swims along the surface of the water, can see above water and below at the same time. A gregarious, shoaling fish, it eats mainly invertebrates that fall to the water surface. Females bear live young rather than eggs.