That’s why we’ve decided to show you the various differences between a crawfish vs. shrimp, so you know exactly what animal you’re seeing in the water or on your plate.
Crawfish are larger than shrimp, have long, thin pincers where the shrimp have none, and exclusively live in freshwater whereas shrimp live in freshwater and saltwater.
The greatest morphological difference between crawfish and shrimp is that crawfish have pincers and shrimp do not have them.
Shrimp live in freshwater and saltwater, but crawfish live in freshwater only.