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Because Saltwater Fish can only breathe in saltwater (as in the ocean) and Freshwater Fish can only breathe in freshwater (as in tap water.)
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Are fancy guppies freshwater fish or saltwater fish?
The guppy is a fresh water fish.
Do freshwater fish need some kind of salt?
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.
Does marine life live in the great lakes?
Not saltwater fish, but some freshwater animals/fish.
Is codfish saltwater or freshwater fish?
The most common codfish is saltwater, but some are freshwater
Is a puffer fish a freshwater fish?
There are different types on puffers. Some live in freshwater and some in saltwater. If you could please elaborate on which kind of puffer fish it would appreciated..... you asshat
Difference between saltwater and freshwater fish?
Some fish are salt tolerant and live in salt water (the sea) e.g. Tuna, Angelfish, lion fish, Ocean Trout, etc. Some fish are adapted to live in fresh water e.g. Brook Trout, Brown Trout, Rainbow Trout, Talapia, Catfish, Guppies, Mollies etc. Some fish can live in both sea water and fresh water e.g Salmon, eels etc.
Are crappie bass and catfish all freshwater or saltwater game fish?
I am unsure what constitutes a 'Game Fish' but Crappie and Bass are freshwater fish. Catfish have a large variety and many are saltwater fish. Bass do have some varieties that are saltwater but most do not resemble the small or large mouth varieties that most people associate as 'bass.'
Are dolphins freshwater creatures?
some are freshwater some are saltwater
Are all dolphins freshwater creatures?
some are freshwater some are saltwater
Why do you have to put salt in the fish tank water?
Saltwater salt, makes it saltwater, for the saltwater fish to survive. Freshwater salt is added to help gill function, reduce stress, combat some health issues and improve water conditions.
Does the cold desert have saltwater or freshwater?
Some deserts have fresh water and others have salt water. Some deserts have both.
Do flounder live in salt and fresh water?
Flounders are saltwater fish, some can be kept temporarily in brackish water.
