Chad Helmer released the albino sturgeon that measured 11 feet, 2 inches and weighed an estimated 1,000 pounds. Biologists have never seen anything like it. A Canadian fisherman landed a rare and ...

DESCRIPTION: Sturgeon have cartilaginous skeletons and a tube-like mouth. In the Kootenai River, they can grow to be larger than 200 pounds. They are gray in color. HABITAT: Kootenai River white ...

But the longevity of the sturgeon in the Kootenai River is waning: It hasn't reproduced in real numbers in at least 30 years due to habitat change caused by Libby Dam, which shut its gates in 1975.

Because their physical appearance has changed very little over time, supported by a slow rate of evolution, sturgeon have been called living fossils. Despite their survival through several geological ...