2. Abdomen: hard and convex. Next, look at the crab's abdomen. The hairy crab with full cream yellow, its abdomen is relatively hard and slightly convex, and it can be clearly felt that there is full cream yellow hidden inside. If the belly of the hairy crab is pressed flat, it means that the crab is not mature enough.
3. Back shell: blue and black with luster. A robust hairy crab, its back is blue-black and shiny. Those hairy crabs with yellow back shells are generally thin.
The above is the introduction of how to see whether hairy crabs are fat or not. I believe everyone knows something through the above, and I hope it will be useful to everyone.