Fish are water-dwelling vertebrates. These aquatic animals breathe by absorbing oxygen from the water using gills. Almost all fish are cold-blooded, and some have scales to protect their bodies. Most species lay eggs—in fact, certain species are able to lay millions of eggs at a time.
Some fish prefer saltwater or freshwater, while others have the ability to survive in both. Common threats to fish in and around the United States include overfishing, habitat degradation, and poor water conditions. Climate change is also a threat, particularly for coldwater fish, which are extremely sensitive to changes in water temperature. When streams get too warm, the fish can experience slower growth rates, lower oxygen levels in the water, and greater susceptibility to poisons, parasites, and disease.
The U.S. Senate votes to permanently reauthorize the Land and Water Conservation Fund, part of a package that also created more than a million acres of new wilderness and conservation areas in the western United States.Read More
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Discover the benefits of wind to wildlife, its risks to wildlife, and how we can mitigate these risks.Read the Report
Place your order today for the themed box that delivers everything you need to create family memories while discovering nature and wildlife.Learn More
The National Wildlife® Photo Contest celebrates the power of photography to advance conservation and connect people with wildlife and the outdoors.