Physical Appearance
The white sturgeon has a slender, long body, head and mouth. This fish has no scales; instead it has large bony scutes that serve as a form of armor. There are 11–14 dorsal scutes, all anterior to the dorsal fin, and 38–48 lateral scutes and 9–12 ventral scutes on each side. The dorsal color of a white sturgeon is gray, pale olive, or gray-brown. The fins are a dusky, opaque gray. The underside is a clean white. It has four barbels, used for sensing food, near its huge toothless mouth.
Sturgeons are classified as a bony fish, but actually are more cartilaginous than bony, their internal bone structure being more like a shark’s. Sturgeon have changed very little since they first appeared, over 175 million years ago and thus have the appearance of a very ancient fish.
Read more about this topic: White Sturgeon
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