The evolution of fish began about 530 million years ago during the Cambrian explosion. It was during this time that the early chordates developed the...

The evolution of fishes took place over a timeline which spans the Cambrian to the Cenozoic, including during that time in particular the Devonian, which...

example of convergent evolution. The use of fins for the propulsion of aquatic animals can be remarkably effective. It has been calculated that some fish can...

the midline of the body. For every type of fin, there are a number of fish species in which this particular fin has been lost during evolution (e.g. pelvic...

acanthodians List of prehistoric cartilaginous fish List of prehistoric bony fish List of sarcopterygians Evolution of fish Prehistoric life Vertebrate paleontology...

and ichthyosaurs, have secondarily acquired a fish-like body shape through convergent evolution. Fishes of the World comments that "it is increasingly widely...

suggests that many fish genera independently evolved amphibious traits, a process known as convergent evolution. These fish use a range of methods for land...

aquatic salamanders, and caecilians. Ampullae of Lorenzini were lost early in the evolution of bony fishes and tetrapods. Where electroreception does occur...

"Comparative study of cartilaginous fish divulges insights into the early evolution of primary, secondary and mucosal lymphoid tissue architecture". Fish & Shellfish...

cartilaginous fish in the order Chimaeriformes (/kɪˈmɛrɪfɔːrmiːz/), known informally as ghost sharks, rat fish, spookfish, or rabbit fish; the last three...