killifish
noun
kil·li·fish
ˈki-li-ˌfish 
1
: any of a family (Cyprinodontidae) of numerous small oviparous fishes much used as bait and in mosquito control
2
: any of various live-bearers (family Poeciliidae)
Examples of killifish in a Sentence
Recent Examples on the Web
Forest killifishes are unusual because of their preferred forest habitat.
—
Aspen Pflughoeft, Miami Herald, 14 Mar. 2025
In his own research, Whitehead has shown that Atlantic killifish, a small silvery fish found off eastern Canada and the United States, has adapted to live comfortably in estuaries plagued by heavy industrial pollution.
—Brian Owens, Smithsonian Magazine, 26 Jan. 2024
Most species are holding fewer cards than the killifish.
—Brian Owens, Smithsonian Magazine, 26 Jan. 2024
Some guppies live in havens that are largely predator-free except for the killifish, a small fish that only takes the smallest juvenile guppies.
—Ed Yong, Discover Magazine, 1 Feb. 2010
See All Example Sentences for killifish
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Aspen Pflughoeft, Miami Herald, 14 Mar. 2025
In his own research, Whitehead has shown that Atlantic killifish, a small silvery fish found off eastern Canada and the United States, has adapted to live comfortably in estuaries plagued by heavy industrial pollution.
—Brian Owens, Smithsonian Magazine, 26 Jan. 2024
Most species are holding fewer cards than the killifish.
—Brian Owens, Smithsonian Magazine, 26 Jan. 2024
Some guppies live in havens that are largely predator-free except for the killifish, a small fish that only takes the smallest juvenile guppies.
—Ed Yong, Discover Magazine, 1 Feb. 2010
See All Example Sentences for killifish
Cite this Entry
“Killifish.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/killifish. Accessed 19 Mar. 2025.
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