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.
Our declining wildlife need urgent protection before they face serious risk of extinction. This bold vision for conservation funding could be the solution.Read More
Urge Congress to stand up for polar bears and their young by opposing drilling in the Arctic National Wildlife Refuge.Read More
Students ages 9-18 are invited to share their big idea through the "Every Elephant Counts" contest for a chance to win a trip to Botswana.Read More
Get to know the amazing wildlife in your backyard and beyond.Read More
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