Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging...

operator that there are fish swimming in the gracht, and that the lock should be opened. It is designed to aid in seasonal fish migration, as an alternative...

animal groups, including birds, mammals, fish, reptiles, amphibians, insects, and crustaceans. The cause of migration may be local climate, local availability...

to facilitate diadromous fishes' natural migration as well as movements of potamodromous species. Most fishways enable fish to pass around the barriers...

factors. Migration is most commonly seen as animal migration, the physical movement by animals from one area to another. That includes bird, fish, and insect...

Forage fish, also called prey fish or bait fish, are small pelagic fish that feed on plankton and other tiny organisms. They are preyed on by larger predators...

A salmon run is an annual fish migration event where many salmonid species, which are typically hatched in fresh water and live most of the adult life...

World Fish Migration Day (WFMD) is celebrated every other year to raise global attention to the need for restored river connections for migrating fish to...

dams, weirs do not usually prevent downstream fish migration (as water flows over the top and allows fish to bypass the structure in that water), although...

A fish screen is designed to prevent fish from swimming or being drawn into an aqueduct, cooling water intake, intake tower, dam or other diversion on...