fish tank

noun

plural fish tanks
: a transparent usually acrylic or glass tank in which living aquatic animals or plants are kept
… And to my left is this fish tank, with these big-eyed, blinking, smiling, kind of bulbous-lipped fish that are kind of, like, curiously swimming up to the glass to check out the stranger in the office …Pedro Pascal, quoted at npr.com
… you'll immediately be greeted by an oversized, blue-lit seashell and neighboring saltwater fish tank, instantly evoking a seaside atmosphere.Todd Martens
compare aquarium

Examples of fish tank in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Even plants dumped out of fish tanks have been found taking over bodies of water in Idaho. Hannah Smith july 1, Idaho Statesman, 1 July 2026 Vinegar can kill fish and aquatic life, so don’t use it in fish tanks or ponds that are actively being used. Karen Brewer Grossman, Southern Living, 26 May 2026 There is also a lizard, four hermit crabs, a toothed frog, and a wall-size fish tank that the kids built with their father; its filtration system is based on the workings of a kidney. Melanie Thernstrom, New Yorker, 29 June 2026 Not only would the food in fridges and cabinets fall victim to their nightly raids, they could never be trusted around a gerbil or bird cage—and god forbid there’s a fish tank around. Shoshi Parks, Popular Science, 10 June 2026 See All Example Sentences for fish tank

Word History

First Known Use

1810, in the meaning defined above

Time Traveler
The first known use of fish tank was in 1810

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Cite this Entry

“Fish tank.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fish%20tank. Accessed 8 Jul. 2026.

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