PREFERRED PAD. Stickleback females in the lab prefer algal nests with colorful foil strips (above). A male (below, arrow) brings home a red strip to brighten his prospects. Östlund-Nilsson and Holmlund
Östlund-Nilsson and Holmlund
In spring, some male fish build nests of algae where females visit and occasionally deposit eggs.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.