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The aquatic plants (seaweed, duckweed, elodea, ext.) create oxygen. That is why fish can live in ponds, lakes and oceans. Often in fish tanks have a bubble blower, or the fish will swim to the surface of the water. If you are thinking about rivers, depending on how many rocks and how fast the river is, if the river is fast with a lot of rocks at the surface of the water, the rocks will stir up the water and create bubble fields the fish can live with.
What else can I help you with?
What happens to fish deprived from oxygen?
they will swim around at the surface of the water
What animal have both gills and lungs?
Sharks, Fish, and other non-oxygen breathing animals in the ocean.
What animal gets its oxygen from its gills only?
fish
What animals breathe oxygen?
Every animal breathes oxygen, even fish (they obtain it by the oxygen in the water).
Why do cats inhale oxygen?
Why do we all inhale oxygen.. every single animal in the world needs oxygen. Fish too
Which is the only animal that can turn its stomach inside out?
A starfish
Floran fish need the oxygen?
Floran fish need oxygen other wise it will death . so always need oxygen
How animals other than mammals obtain their oxygen?
any animal that is on land at some point in its life obtain oxygen the same exact way we do. the only animal that obtains oxygen in a different way is the fish and it obtains its oxygen by filtering the water it swims through between its gills.
Do goldfish eat any other animals?
Goldfish may only appear to eat fish food but technically they are eating other animals because inside fish food is a rare animal named the bbanornet which gives protein to small fish such as the goldfish.
What animal obtain their oxygen via internal gills?
Fish! Good luck StudyIslanders!(:
What other animal get along with pelicans?
Fish.
Do puffer fish need oxygen?
Of course all fish need oxygen even puffer fish....
