To cite package ‘lionfish’ in publications use:

  Medl M (2025). _lionfish: Interactive 'tourr' Using 'python'_. R
  package version 1.0.27, <https://github.com/mmedl94/lionfish>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {lionfish: Interactive 'tourr' Using 'python'},
    author = {Matthias Medl},
    year = {2025},
    note = {R package version 1.0.27},
    url = {https://github.com/mmedl94/lionfish},
  }