Saltwater:
* Oceans: The vast majority of fish species live in the ocean.
* Seas: Smaller bodies of saltwater connected to the ocean, like the Mediterranean Sea.
* Estuaries: Where rivers meet the ocean, creating a mix of fresh and saltwater.
Freshwater:
* Rivers and streams: Running water environments with varying temperatures and flow rates.
* Lakes and ponds: Standing water environments with varying depths and temperatures.
* Wetlands: Areas that are often flooded, like swamps and marshes.
Specific environments:
* Coral reefs: Vibrant underwater ecosystems with diverse marine life.
* Deep sea: The cold, dark depths of the ocean, where unique fish species thrive.
* Mangrove swamps: Coastal areas with salt-tolerant trees, providing habitats for fish.
It's important to note:
* Fish can live in both fresh and saltwater: Some fish species can adapt to different water conditions.
* Different species prefer different environments: The specific habitat requirements vary depending on the fish species.
* Fish play a crucial role in their ecosystems: They are an essential part of the food chain and contribute to the health of their aquatic habitats.