But unlike birds and reptiles, in many freshwater fish species it is the male that builds and tends the nest. "They try to build an attractive nest to entice females to come and spawn with them," ...

Chinook salmon were once abundant in the North Yuba River in California’s Sierra Nevada. But since 1941, they’ve been kept ...

A new study led by University of Wisconsin-Madison researchers showed that walleye in the upper Great Lakes may be at risk from earlier ice-off dates.

The first step was to divide the country into six regions based on general spawning times. Then we assigned a bass expert to each area and asked them to choose the best window of time to fish ...

Mapping fish migration routes and identifying threats is crucial to protecting freshwater species and their habitats, ecologists argue.

The spawning season for ito ... It is one of the largest freshwater fish in Japan and a member of the salmon family. Its natural breeding grounds in Japan are the northernmost main island ...

Native to China’s Yangtze River, the Chinese paddlefish was thought by many to be the world’s largest freshwater fish, with reports ... them from reaching their spawning grounds.

These freshwater behemoths are also extremely long-lived. While males may live some 55 years, females can reach more than 150. They are slow to mature and don’t begin spawning until they are 15 ...