There have been reports of sturgeon growing to over 1800 pounds. Today's population generally grow to about 600 pounds. In the wild, females reach maturity between 15 and 20 years of age and males between 7 and 15 years. In captivity, because of diet and temperature control, maturity for females is reduced to between 10 and 12 years and for males between 5 and 7 years. We don't know.
Sturgeon are mysterious bottom dwellers and it is difficult to determine their numbers.
However, it is generally agreed that the populations of most species are depressed.