Box plots showing the activity index (AI) for the benthic fish species stone loach (Barbatula barbatula) (a, b) and bullhead (Cottus gobio) (c, d) in the trials with benthic fish only (Control), in the presence of spinycheek crayfish (Faxonius limosus), and in the presence of signal crayfish (Pacifastacus leniusculus) during day and night times.

 
 
  Part of: Mohammed E, Amen R, Abdelwahab HM, Winkelmann C (2023) Potential impacts of invasive crayfish on native benthic fish: shelter use and agonistic behaviour. NeoBiota 83: 131-153. https://doi.org/10.3897/neobiota.83.102975