[ pahy-luh t-fish ]
/ ˈpaɪ lətˌfɪʃ /

noun, plural (especially collectively) pi·lot·fish, (especially referring to two or more kinds or species) pi·lot·fish·es.

a small, marine fish, Naucrates ductor, often swimming with sharks.
any of various other fishes having similar habits.

Origin of pilotfish

First recorded in 1625–35; pilot + fish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for pilot fish

pilot fish


a small carangid fish, Naucrates ductor, of tropical and subtropical seas, marked with dark vertical bands: often accompanies sharks and other large fishes
any of various similar or related fishes
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012