/ Thesaurus / F Synonyms of fundulus heteroclitus Find synonyms for: Noun1. mummichog, Fundulus heteroclitus, killifishusage: silver-and-black killifish of saltwater marshes along the Atlantic coast of the United StatesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language