threadfin
noun
thread·fin
ˈthred-ˌfin 
: any of various bony fishes (family Polynemidae, especially genus Polydactylus) having elongated filamentous rays on the pectoral fin
also
: a fish (such as Dorosoma pretense of the herring family) having usually one similar ray extending from a fin
Examples of threadfin in a Sentence
Recent Examples on the Web
This includes the second species the researchers studied — the threadfin butterflyfish.
—
Ari Daniel, NPR, 25 Aug. 2025
Since then, the fishing market has exploded with options from the Doomsday Tackle C-Shad (modeled after a photo of a threadfin shad), to the YUM Sonar Minnow that produced half of Jason Christie’s fish during his 2022 Bassmaster Classic win at Lake Hartwell.
—David A. Brown, Field & Stream, 27 June 2024
My favorites back home are humpback grouper, threadfin, and striped mullet.
—Lucas Sin, Bon Appétit, 20 Mar. 2024
In Linnaean taxonomy, hybrids look like algebra—two species names adjoined with an x. A hybrid between a threadfin butterflyfish and a lined butterflyfish becomes C. auriga × C. lineolatus.
—Sabrina Imbler, Time, 15 Dec. 2022
Slow-troll a lively threadfin behind a planer board, and it might get smashed by a fat landlocked striper.
—Joe Cermele, Outdoor Life, 30 Mar. 2020
Hatches of a small feeder fish called threadfin shad are schooling and can attract bass and trout into feeding frenzies.
—Tom Stienstra, SFChronicle.com, 21 Sep. 2019
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Ari Daniel, NPR, 25 Aug. 2025
Since then, the fishing market has exploded with options from the Doomsday Tackle C-Shad (modeled after a photo of a threadfin shad), to the YUM Sonar Minnow that produced half of Jason Christie’s fish during his 2022 Bassmaster Classic win at Lake Hartwell.
—David A. Brown, Field & Stream, 27 June 2024
My favorites back home are humpback grouper, threadfin, and striped mullet.
—Lucas Sin, Bon Appétit, 20 Mar. 2024
In Linnaean taxonomy, hybrids look like algebra—two species names adjoined with an x. A hybrid between a threadfin butterflyfish and a lined butterflyfish becomes C. auriga × C. lineolatus.
—Sabrina Imbler, Time, 15 Dec. 2022
Slow-troll a lively threadfin behind a planer board, and it might get smashed by a fat landlocked striper.
—Joe Cermele, Outdoor Life, 30 Mar. 2020
Hatches of a small feeder fish called threadfin shad are schooling and can attract bass and trout into feeding frenzies.
—Tom Stienstra, SFChronicle.com, 21 Sep. 2019
Cite this Entry
“Threadfin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/threadfin. Accessed 9 Sep. 2025.
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