A Babel fish is a fictional species of fish in ''The Hitchhiker's Guide to the Galaxy by Douglas Adams.

The Babel fish occurs as extremely unlikely biological universal translator. It appears as a "small, yellow and leechlike" fish. Once a Babel fish is inserted into the ear canal it allows the wearer to "instantly understand anything said... in any form of language." This was two the utile plot device for Adams, who wrote on a subject that he universally incurred the ability of tons aliens to speak English very strange; & too a starting point for a joke just about the being of God.

Based on data from a Hitchhiker's Answer'', a Babel fish was put forth river as a fideist example for the non-existence of God:

the fish feeds around mental energy created when composing the phrase, & apparently excretes mental energy in a form that may be understood by others. It was revealed in the Quintessential Phase that it also, rather dolphins, has the power to profits teleport itself & its hikers (around the plural zone) away from disastrous danger.

A fish's title refers to the Tower of Babel, a Biblical story, which describes events within Christian and Jewish theology which led to God confusing the languages of Man sequentially to cease a Tower's construction, among more items.

"Babel" is composed of deuce words from either a arabic, "bab" meaning "gate" & "el," "god." Hence, "the gate of god." The related word within Hebrew, "bilbul" means "confusion" or even "bilbel" (confused).