Fins
Tailfin
Tailfin noun - A stabilizer that is part of the vertical tail structure of an airplane.
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Animal Gender-Bender: Touna Suzuki/Bettako is a betta mermaid with a billowing red tailfin, but normally female bettas have much shorter fins and dull colors.
Source: Manga / Shinkaigyo No Anko San -
Her fins are relatively normal shape and don't suddenly morph into hands, but she still plays Tailfin Walking straight.
Cite this Source
Tailfin and Fins. (2016). Retrieved 2026, July 30, from https://thesaurus.plus/related/fins/tailfin
Fins & Tailfin. N.p., 2016. Web. 30 Jul. 2026. <https://thesaurus.plus/related/fins/tailfin>.
Tailfin or Fins. 2016. Accessed July 30, 2026. https://thesaurus.plus/related/fins/tailfin.
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