Lake sturgeon in Great Lakes may live over 400 years

A new study published in the Journal of Fish Biology suggests that lake sturgeon inhabiting the North American Great Lakes may live significantly longer than previously estimated. While scientists previously believed these fish lived for just over 100 years, new data indicates that males may reach ages of up to 435 years, potentially even longer.

Researchers from the University of Michigan utilized 44 years of data collected from five different populations through a method of capture, tagging, and recapture. By developing equations to estimate age based on growth rates and size, the study found that while median ages for large individuals were lower, some males reached a median age of 435.

Lake sturgeon are considered one of the most endangered species on the planet. Scientists note that understanding their true longevity is critical for improving conservation efforts. The study highlights that growth rates vary by sex and food availability, with females generally growing larger than males.