Biologists with Colorado Parks and Wildlife have been working along Bear Creek in Colorado Springs to help save Colorado’s state fish: the greenback cutthroat trout.

Courtesy: Colorado Parks and Wildlife

On June 7, and again on Tuesday, Aquatic biologists stunned the fish, netted them, and then scooped them into buckets. According to a release, they then stripped the male fish of their ‘milt’ -- or semen, which was mixed with the ‘roe’ – or eggs of female greenback trout in a makeshift lab along the side of the creek.

Courtesy: Colorado Parks and Wildlife
Courtesy: Colorado Parks and Wildlife

According to Colorado Parks and Wildlife – in 1937 the species were considered extinct, the victims of pollution from mining, pressure from fishing, and competition from other species.

<p>Courtesy: Colorado Parks and Wildlife</p>

The work they’re doing, helps biologists to breed the fish in a hatchery setting to rehabilitate the population.