why are fishes best fit for aquatic life? give two reasons
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Fish are the gill-bearing aquatic craniate animals that lack limbs with digits.
fish have fins to swim in water
fish have fins to swim in water
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Fish use gills to take oxygen from water just as we use our lungs to take oxygen from the air. In a fishes world oxygen is a rare and precious resource. Although air is 21 percent oxygen, water has only a very tiny amount of dissolved oxygen .
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