Why do betta fish in pet shop not require a pump in their tank? And why are their tanks so small.
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Bettas have a specialized organ that allows them to draw air thru the surface of the water where most fish need the oxygen dissolved in the water, so bettas can be shipped and displayed in small amounts of water because the oxygen is coming from the air. This is also pretty cruel as they don’t live in puddles in the wild. It’s like a puppy can be kept in a closet, but it’s not gonna thrive.
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