Crayfish are mostly aquatic, unlike grasshoppers, who live on land. Crayfish also have two pairs of antennae, and grasshoppers only have one pair. Crayfish breathe via their gills, and grasshoppers...
Visit the URL posted below to discover the differences between ants and grasshoppers: http://www.lawrenceartscenter.com/STB/pdf/Ant_Grasshopper.pdf
yes of course!
I don't know for sure but some article said crayfish are cannbalistic even against their own types
the colours of a cray fish are usully red , orange and brown