Differences in nutritional quality of edible tissues were detected between wild and reared swimming crabs.
Ratio of n-3/n-6 fatty acid of wild crab was significantly lower than that of reared crab (P < 0.05).
Contents of most amino acids (Gly excluded) of reared crab are higher than those of wild crab.
Content of As in wild crab has seriously exceeded the standard of food safety.
Reared swimming crab is thought to have a higher nutritious value compared to the wild one.