Breeding colors of freshwater fishes

You don’t have to fly to Cozumel to see pretty fishes. Freshwater fishes are amazingly colorful, but are underrated. Fish enthusiasts and divers often flock to tropical latitudes and coral reefs to see exotic, specimens. However, some of the most eye-catching specimens are swimming in North American streams at this very moment. It’s spawning season…

Deeper understanding from shallow streams

Chubs are prolific ecosystem engineers. Photo by B. Peoples Chubs (Nocomis spp.) are large minnows that are common throughout eastern North America. In spring, adult male chubs carry gravel in their mouths to construct large, mound-shaped nests for spawning. Nests can be 1.5 m in diameter and over a half-meter tall. Chub nests are unique…