give reson blood goes only through heart in fishes
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Blood goes once in one cycle through heart in fishes because fish has two chambered heart . The blood is pumped to the gills for oxygenation from where it is passed directly to the rest of the body .
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Explanation:
Blood goes once in one cycle through heart in fishes because fish has two chambered heart . The blood is pumped to the gills for oxygenation from where it is passed directly to the rest of the body
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