jellyfish get food by eating small fish or zooplankton. Some jellyfish emit stuff towards their prey, which paralyzes their prey. Then the jellyfish grabs the prey with its tentacles and consumes the prey. They kill their prey by using harpoon shaped needles to inject extremely poisonous venom.
fish swim for oxygen.
Tadpoles get oxygen from water like fish do.
The fishes gills are like filters. when water goes in a fish's mouth, it goes through the gills, which filter out the oxygen.
A filter in a fish tank helps provide oxygen by circulating and aerating the water, allowing for oxygen to dissolve and be available for the fish to breathe.
Of course all fish need oxygen even puffer fish....
Floran fish need oxygen other wise it will death . so always need oxygen
Mammal take in oxygen in the air while fish take in oxygen in the water.
A fish AERATOR is a device used to add oxygen into a fish tank so that the fish do not suffocate as they consume the increasingly depleted oxygen supply
Sharks are a fish. Fish have gills that extract oxygen directly from the water in which they live.
All fish need oxygen....
no, Fish like all animals breathe in Oxygen and out Carbon Dioxide.
All fish, whether baby or older, need oxygen.