Saltwater fish are fish that dwell in marine habitats, primarily in oceans and seas, where the water has a high salt content. They're able to adapt to the salty environment of seawater and even thrive there. Physiological and behavioral adaptations help these fish keep their internal salt and water levels stable, hunt for food, and avoid danger in their aquatic environment.
- Many people think of tuna, salmon, cod, flounder, and sharks when they think of saltwater fish, but this broad category also includes the vibrant tropical fish found in coral reefs. These fish are crucial to marine ecosystems and the diets of many people across the world.
To differentiate them from the fish found in freshwater environments (rivers, lakes, etc.), the phrase "saltwater fish" is commonly used. The various habitats and ecological niches within the marine environment are responsible for each species of saltwater fish's unique adaptations and habits.
