Videos of Signal Crayfish Activity
A signal crayfish foraging in a gravel bed, altering the orientation of the grains 
Two signal crayfish fighting, leading to increased fine sediment transport 
Video Credit: Matthew F. Johnson
A signal crayfish foraging in a gravel bed, altering the orientation of the grains
Two signal crayfish fighting, leading to increased fine sediment transport
Video Credit: Matthew F. Johnson