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白鲟及其保护意见白鲟和匙吻鲟同属白鲟科鱼类。体无成行的骨板、皮肤裸露，仅尾鳍上叶有硬鳞。吻很长，如剑状或汤匙状。胸鳍无棘。吻须２枚，甚小。分２属。１．匙吻属：口不能伸缩。吻呈汤匙状。尾上硬鳞１３一２０枚。仅１种即匙吻鲟，产于北美。２．白鲟属：口能伸缩...
White sturgeon and its conservation advice White sturgeon and key sturgeon belong to white sturgeon fish. Incomplete bone plate, skin bare, only the caudal lobe have hard scales. The kiss is very long, like a sword-shaped or spoon-shaped. Pectoral no spine. Kiss to be 2, very small. Divided into 2 genera. 1. Kisses are: mouth can not stretch. Kiss was spoon-shaped. 13-13 hard scales on the tail. Only 1 species of paddlefish, produced in North America. 2. White sturgeon: mouth can stretch ...