Jill Look shows her daughter Jenna, 11, how to clip the adipose fin.

Zero-plus par salmon travel down a trough back to a tank after having their adipose fins clipped.

Medea Steinman clips an adipose fin on zero-plus par salmon.

Heather Andrews concentrates closely as she clips an adipose fin.

From right, Jodi Look, Carlene Holmes, Betsy Fitzgerald, Carla Manchester, Heather Lee, Betsy Fitzgerald and Sherry Cole clip adipose fins on fall salmon.

Medea Steinman, left, and Heather Andrews clip adipose fins on zero-plus par salmon, also known as fall salmon, during Ladies Night at the East Machias Aquatic Research Center in East Machias.

The salmon swim in a solution that partially anesthetizes them before their fins are clipped.

Heather Lee shares a laugh with Carla Manchester and Jill Holmes while the women participate in Ladies Night.

Carla Manchester looks into a bucket of zero-plus par salmon while Jill Holmes clips an adipose fin on a zero-plus par salmon, also known as fall salmon, during Ladies Night at the East Machias Aquatic Research Center in East Machias on Oct. 6.

Zach Sheller, a hatchery manager at the East Machias Aquatic Research Center in East Machias, drops a zero-plus par salmon in a trough that will return it to a tank.