/ Thesaurus / F Synonyms of fish tank Find synonyms for: Noun1. aquarium, fish tank, marine museum, vivarium, tank, storage tankusage: a tank or pool or bowl filled with water for keeping live fish and underwater animalsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language