dealfish
noun
deal·fish
ˈdēl-ˌfish 
: any of several silvery ribbonfishes (genus Trachipterus, especially T. arcticus) inhabiting deep seas
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Mediterranean dealfish: The species swims vertically and lets its nonfunctional tail fin drift behind.
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Leslie Nemo, Scientific American, 8 June 2021
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Leslie Nemo, Scientific American, 8 June 2021
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“Dealfish.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dealfish. Accessed 18 Jun. 2025.
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