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WHY DO SOME FISH HAVE COLOURLESS BLOOD?
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Antarctic icefish have colourless blood with no red blood cells and no haemoglobin, the oxygen-carrying pigment. This probably comes down to a genetic mutation, and means their blood carries 90 per cent less oxygen than red blood. They survive partly because frigid Antarctic waters are oxygen-rich. Icefish also have enormous hearts that pump huge volumes of blood around their bodies, making sure they get enough oxygen.
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Answer-
✴ Some Fish do not Contain Haemoglobin and RBC ....✔
✳ That's Why They are Colorless...✔
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