Question: what is the difference between male and female crabs?
Answer: Specify gender: Crab gender is easy to distinguish: male crabs (or "jimmies") have a narrow, T-shaped "apron" on the back of their shell, while female crabs ("sooks") have a wide apron. In addition, live females have red-tipped claws, while male claws are blue. ... Some crab sellers may list their crabs as No. 1, 2 and 3.