Dictionary.com
definitions

elephant fish

noun
  1. any of several long-snouted fishes belonging to the genus Callorhyncus, of the family Callorhynchidae (Chimaeridae), inhabiting deep waters of the Southern Hemisphere.

Origin of elephant fish

First recorded in 1765–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for elephant fish

elephant fish

noun
  1. a large marine fish, Callorhinchus milii, of southwest Pacific waters, having a snout resembling an elephant's trunkAlso called: reperepe
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