Fish

A fish was a variety of water-dwelling animal found on Earth and many other planets.

Some intelligent species seemed to be descended from fish or were at least fish-like in appearance. Example of this were the Aridians, (TV: The Chase) the Fishmen, the Pescatons, (AUDIO: Doctor Who and the Pescatons) the Ockorans, the Kalarians, the Saturnyns, (TV: The Vampires of Venice) the Dax, the Hath (TV: The Doctor's Daughter) and Zargath's race. Damon converted humans into fish people through surgery. (TV: The Underwater Menace)

Examples of non-sentient fish included pilot fish, singing fish, Aaglon sharks, fugora fish, sky fish, and Gumblejack. (TV: The Christmas Invasion, AUDIO: Neverland, PROSE: Tragedy Day, PROSE: Mean Streets, TV: A Christmas Carol, The Two Doctors)

Fishing, the sport of catching fish, was enjoyed by the Doctor. (TV: The Androids of Tara, The Two Doctors)

Fish was often served with chips on Earth. (TV: The Rebel Flesh)

Due to an Alien Totem Pole, fish started raining from the sky. (TV: The Curse of Clyde Langer)

Clara Oswald, while serving as a governess under the alias Miss Montegue, claimed to her young charges in 1892 that she invented fish so she wouldn't be alone while swimming. (TV: The Snowmen)