How are crayfish and grasshoppers different?

Answer:
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 have lungs.
First answer by Yale10. Last edit by Yale10. Contributor trust: 8 [recommend contributor recommended]. Question popularity: 1 [recommend question].