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Do fish have hearts and circulatory system?

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Absolutely! The fish circulatory system is not unlike ours only substitute gills for lungs and a heart with only two chambers (there is some discussion about how many chambers but two is the standard answer). read more

The fish circulatory system is not unlike ours only substitute gills for lungs and a heart with only two chambers (there is some discussion about how many chambers but two is the standard answer). read more

A closed circulatory system can have a single or double circulatory pattern. Fish have a single circulatory pattern, wherein the blood passes through the heart only once during each complete circuit. Oxygen-deprived blood from the body tissues comes to the heart, from where it is pumped to the gills. read more

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