Status of a shelter (occupied: Black, unoccupied: Grey) before entered by crayfish or benthic fish.

 
 
  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