No, but what they eat is generally part of a food chain which is based on plants that get their energy from sunlight by photosynthesis. There is at least one exception to this: deep ocean vent communities which get their energy from sulfur compounds.
Freshwater fish derive small amounts of salt from their freshwater habitat. If you place a freshwater fish in saltwater, the difference in habitat will cause the fish to burst.
Saltwater fish need to drink, but freshwater fish never drink.
Loaches are freshwater fish, for example, the clown loach which is a freshwater fish.
It depends on which fish it
They are freshwater fish.
Redfish are fresh water
Piranhas are freshwater fish, living in the Amazon basin.Actually they are both freshwater and salt.... Mostly freshwater though!
Yes, they need Salt and Pepper, but a good cajun spice mix is best.
Freshwater fish need regular water without salt, Marine fish need salt water. Marine fish are more colorful and interesting then freshwater fish but they are a lot harder to look after than freshwater fish. Saltwater fish need more water to swim in and are more fragile than freshwater fish.
A type of Freshwater Fish
Yes Snakeheads are freshwater fish.
Because saltwater fish can only breathe in saltwater (as in the ocean) and freshwater fish can only breathe in freshwater (as in tap water.)