1. Tenderness of meat: Sandao scale is more tender than grass carp, and it has no small thorns, only the main bone and some big bones, so old people and children can eat easily. In contrast, the meat quality of grass carp is relatively rough and contains many small spines, so it needs special treatment and is not suitable for the elderly and children.

2. Moderate spines: Sandaowan is a kind of carp, which is relatively flat in shape, moderate in spines, fleshy and tender than grass carp. Three scales have fewer thorns than grass carp, and the size of thorns is moderate, which will not affect the eating experience. In contrast, grass carp has many thorns of different sizes, so it needs special treatment, otherwise it will easily affect the taste.