Two, nutritional value is different. Red sturgeon: extremely high nutritional value. Crab: nutritional analysis of green crab is rich in protein and trace elements, the body has a good tonic effect.
Introduction of red sturgeon:
Saw-margined green crab is named for its greenish body color. Saw-margined green crab cephalothorax armor slightly oval, smooth surface, slightly elevated in the center, the partition is not obvious. The surface of the armor and the appendages are green-colored. The dorsal surface has a distinct H-shaped indentation between the gastric region and the cardiac region, the frontal surface has four prominent triangular teeth, which are more prominent than the inner eye sockets, and the anterolateral margin has nine medium-sized teeth, with the terminal teeth being small and sharply protruding, and pointing toward the front.
Chelicerae are strong, both chelicerae asymmetrical. Anterior margin of long segment with 3 spines, posterior margin with 2 spines; outer terminal margin of carpal segment with 2 blunt teeth, inner terminal angle with 1 strong spine; metacarpal segment swollen and smooth, especially swollen in males, dorsal surface with 2 rondellar ridges which terminate in 1 spine, inner and outer portions of dactylus with 1 linear groove on each side, space between two fingers large, teeth on inner margin large and blunt.
The anterior and posterior margins of the first three pairs of pedipalpal phalanges are covered with short hairs, and the anterior and posterior phalanges of the last pair of pedipalps are flattened and pulpy, making them suitable for swimming. The male abdomen is broadly triangular, with the terminal margin of segment 6 concave, its margin straight, the lateral margins straight, and the terminal margin of the last segment bluntly rounded, while the female abdomen is broadly rounded. The width of the armor can be up to 20 centimeters, and the weight has 1.5 kilograms.