Last updated: May 15, 2017
River Chub Building A Nest
River chub play a very vital role in river ecology through one of their specialized behaviors, nest building. Brightly colored male river chubs collect stones up to golf ball size with their mouths and stack them in piles. These stone piles act as a suitable nest to protect their fertilized eggs. Records show that these stacked stone nests, when completed, may weigh in excess of several hundred pounds!