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When the fish dies,its gills will push out air from the body.The moving air's force pushes the fish deeper into the water.A few minutes later, it will float up due to the air in the air bladder of the fish.
That's the answer for the SEE programme Q9!
From one of 6R8's students


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Q: Why does dead fish sink first then floats on water?
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Why do dead fish sinks first then floats on water?

Because fish breathe water so when their lungs fill up it makes them sink but when it empties they rise which is why dead fish come to the surface when they die.


Is it bad if your fish turns upside down and floats to the top of the water?

its dead.. Sorry, but I think your fish is dead! :(


Why do dead fish sinks then floats on water?

Because fish breathe water so when their lungs fill up it makes them sink but when it empties they rise which is why dead fish come to the surface when they die.


Can you catch a dead fish?

Yes because the dead fish floats so it wont move


Why do fish turn in there back when there dead?

They don't "all" do that. The position (angle) a dead fish floats in depends upon the state of the decay in the dead fish and exactly where the main decay is.


What is a dead and decaying fish?

It's a fish that doesn't move or function and it floats. They are poisonous so don't touch them or you'll die. If it's decaying that means that the fish scales are falling off and being absorbed by the water which would make the water toxic.


Which characteristic of water is most helpful to fish in a lake?

When Frozen water floats on liquid water


What has happened when your fish is upside down floating on the top of the tank?

Its Dead. When it floats up and the gills are not moving and breathing for sure it is dead


What floats on lakes?

A log. Boats. A duck. A swan. Two ducks. A dead fish. A beach ball.


How does brian cook his first fish?

brian cooks his first fish by sticking the bow and arrow down the water and waiting for the fish to come close a fish stpooed in front of the arrow and he aimed it benath it and realesed and then the fish was dead


Fish that live out of water?

The only fish species that i know of that lives out of water is the dead kind.


How can you dry a dead fish out?

leave it out of water.