Distinguishing features of the teleosts are mobile premaxilla, elongated neural arches at the end of the caudal fin and unpaired basibranchial toothplates. The premaxilla is … See more

Teleosts are found worldwide and in most aquatic environments, including warm and cold seas, flowing and still freshwater, and even, in the case of the desert pupfish, isolated and … See more

Many teleosts form shoals, which serve multiple purposes in different species. Schooling is sometimes an antipredator adaptation, … See more

Economic importance
Teleosts are economically important in different ways. They are captured for food around the world. A small number of species such as See more

External relationships
The teleosts were first recognised as a distinct group by the German ichthyologist Johannes Peter Müller in 1845. The name is from See more

Respiration
The major means of respiration in teleosts, as in most other fish, is the transfer of gases over the surface of the gills as water is drawn in through … See more

Most teleost species are oviparous, having external fertilisation with both eggs and sperm being released into the water for fertilisation. Internal fertilisation occurs in 500 to 600 species of teleosts but is more typical for Chondrichthyes and many tetrapods. This … See more