The Mata mata (Chelus fimbriata)

The mata mata is carnivorous, feeding exclusively upon aquatic invertebrates and fish.[8][16] When the stomach content of 20 wild mata mata turtles was examined it consisted exclusively of small fish. The turtles predominantly feed at night in muddy water with limited visibility. However the turtle is well adapted to hunting in these conditions. The mata mata has very fine eyesight with eyes that reflect light, similar to other nocturnal reptiles. In addition, the skin flaps on the neck are also extremely sensitive and help the mata mata detect nearby movement.