/ Thesaurus / S Synonyms of sargassum fish Find synonyms for: Noun1. sargassum fish, spiny-finned fish, acanthopterygianusage: small fantastically formed and colored fishes found among masses of sargassumWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language