How Do Fish Breathe? | Animal Science for Kids 

Jessi and Squeaks adopted a new fish! They have him all set up in a nice fish tank, but now they have a big question: how do fish breathe underwater?!
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SOURCES:
www.howitworksdaily.com/how-d...
basicbiology.net/animal/fish/g...
www.ucmp.berkeley.edu/vertebra...