Fish Fish were a variety of water - dwelling animal found on Earth and many other planet s . Fish on Earth . On Earth , fish swam in water . ( TV : " Listen " ) Uses . On Earth , fish and chips were often served as food . ( TV : " The Rebel Flesh " ) The Eleventh Doctor particularly enjoyed fish finger s . ( TV : " The Eleventh Hour " ) Fishing , the sport of catching fish , was a popular pastime enjoyed by the Doctor . ( TV : " The Androids of Tara " , " The Two Doctors " ) History . The Sixth Doctor ate fish , among other foods , at a feast with Alfred the Great in the 9th century . ( PROSE : " The Man Who Wouldn ' t Give Up " ) In Victorian times , showmen used to draw the crowds by taking the skull of a cat , glueing it to a fish and calling it a mermaid . The Ninth Doctor compared the Slitheen ' s Space Pig with this trick while explaining the Space Pig ' s true nature to Toshiko Sato . ( TV : " Aliens of London " ) In the 1900s , when Fang Rock rock was engulfed in fog during a Rutan scouting mission , Leela found dead fish floating in a pool of water and poked them with her knife . The Fourth Doctor attributed their deaths to an electrical field present on the island . ( TV : " Horror of Fang Rock " ) In 1984 , Frank Harris was recruited from the refinery to work on a plan to restock the North Sea with fish . ( PROSE : " Downtime " ) In 2011 , due to an alien totem pole , fish started raining from the sky . ( TV : " The Curse of Clyde Langer " ) In 2013 , many fish in Ambermouth harbour died overnight due to the presence of silicon quartz in the water . Gull s gorged on the bodies until they couldn ' t fly . ( AUDIO : " Eldrad Must Die ! " ) When asked by Ramón Salamander ' s chef Griffin to tell him a menu for dinner , Victoria Waterfield suggested having fish on the menu . ( TV : " The Enemy of the World " ) In 5000000023 , Rose - the - Cat caught a fish on New Earth . ( COMIC : " A Rose by Any Other Name " ) Undated events . The Second Doctor once ate fish served by Bior and his tribe in Scandinavia . ( PROSE : " That Which Went Away " ) The Twelfth Doctor once observed the " perfect defence " of a puffer fish when questioning as to whether there could be such a thing as " perfect hiding " . ( TV : " Listen " ) Types of fish on Earth . Fish were common in Earth ' s sea s , river s and lake s . Types of fish included : < dpl > debug = 1 allowcachedresults = true categorymatch = Earth fish columns = 4 namespace = 0 format = , \ n * , , < / dpl > Elsewhere in the universe . Like on Earth , fish could be found beneath the seas of other planets . Aaglon shark s were native to the waters of the planet Olleril . ( PROSE : " Tragedy Day " ) Fugora fish lived in the seas of Megerra . ( PROSE : " Mean Streets " ) Lake Abydos was home to singing fish . ( AUDIO : " Neverland " ) Yaddlefish were a type of fish which lived on Gallifrey . ( PROSE : " Blind Fury " ) Kandalinga was home to a wide variety of fish , including some which were larger than the TARDIS . ( PROSE : " The Fishmen of Kandalinga " ) In Sardicktown , fish existed which were able to swim through fog , making it appear as if they were flying . The Eleventh Doctor encountered numerous sky fish and a sky shark in the town . ( TV : " A Christmas Carol " ) Universally , some fish could be eaten . The Gumblejack was considered one of the tastiest fish in Mutter ' s Spiral . ( TV : " The Two Doctors " ) The Sevateem used spear s to catch fish on their planet . ( AUDIO : " The Fate of Krelos " ) References . The Eleventh Doctor attempted to disguise his interest in the lack of vibrations on the deck of Starship UK by pretending to be looking for " an escaped fish " . ( TV : " The Beast Below " ) Whilst dressed as Sherlock Holmes , the Eleventh Doctor asked one of Walter Simeon ' s servants if he had a fish called Colin . When he said " no " , the Doctor said he didn ' t think he had . ( TV : " The Snowmen " ) While serving as a governess under the alias Miss Montague , Clara Oswin Oswald claimed to her young charges in 1892 that she invented fish so she wouldn ' t be alone while swimming . ( TV : " The Snowmen " )