The family Mormyridae, sometimes called "elephantfish" (more properly freshwater elephantfish), are freshwater fish in the orderOsteoglossiformes native to Africa.
It is by far the largest family in the order with around 200 species. Members of the family are popular, if challenging, aquarium species. These fish are also known for having large brain size and unusually high intelligence. The elephantfishes are a diverse family, with a wide range of different sizes and shapes. The smallest are just 5 centimetres (2.0 in) in adult length, while the largest reach up to 1.5 metres (4.9 ft).
Some species possess modifications of the mouthparts to facilitate feeding upon small invertegrates buried in muddy substrates. The shape and structure of these leads to the popular name of "elephant nosed fish" for those species with particularly prominent mouth extensions. The extensions to the mouthparts usually consist of a fleshy elongation attached to the lower jaw.
Click on any of the images below to view our Mormyridae gallery.