Couple years ago, a 120 pound Sturgeon washed up on the shore of Lake Calhoun in Minneapolis. DNR figured the Sturgeon was about 90 years old. What puzzled them is how it got there in the first place.

Lake Calhoun empties into Minnehaha Creek, that empties into the Mississippi River, after going over Minnehaha Falls. So someone had to transplant the fish back around 1920, from the St. Croix River, which is the border between Minnesota and Wisconsin (about 30 miles to the east).

St Croix River supplied most of the Eastern Coast of the USA with Sturgeon Caviar, in the 1880's, but over harvesting of the eggs (they cut the bellies open and toss the away the fish), almost eliminated these giant fish from our waters.

Sturgeon grow very slowly, and do not mate until about 10 years of age, and then they only spawn once ever five years or so! They have a exoskeleton, of hard plates, protecting their body. They can live to well over 100 years of age.