by XenonZerrow

Bahamut or Bahamoot is a vast fish supporting the earth. Bahamut is occasionally described with a head resembling a hippopotamus or elephant.
The great fish is present in Arabic mythology, as a living layer. In Jorge Luis Borges' Book of Imaginary Beings Bahamut is Behemoth, but altered and magnified. It is so immense, that no human can bear its sight.
The beast is described in two possible ways of holding the earth. In the first he is a fish floating in water, supported by darkness, on his back is a bull called Kujata holding a ruby mountain and on its top is an angel holding the seven earths. The other states, that Bahamut supports a bed of sand, with a bull on top, on whose back is a large rock, which holds the waters with earth, beneath all this are layers of suffocating winds, a veil of darkness and mist. Other sources suggest that Bahamut is a layer in Arabic cosmography.
Bahamut appears in the 496th night of the One Thousand and One Nights, he is the fish Isa walks on. In this version he is a fish swimming in a vast ocean, carrying a bull on its head, with a length of 3 days of journey, it bears a giant rock, above which is an angel holding the seven stages of the earths. Beneath Bahamut is an abyss of air after which comes an abyss of fire, and beneath is Falak the giant serpent. Isa falls into unconsciousness, and upon awakening Allah tells him that he creates forty of such fishes a day.

NOTE: Originally Sonofskankware uploaded Bahamut as a dragon god from D&D, but I replaced it with the original Bahamut. Call me an ***hole, but I like to keep the facts right. (It should have been put to the list of dragons anyway.)