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A Betta anatomically is basically the same as any other fish differing only in its having an extra method of getting oxygen into its blood stream. It has a thing called a Labyrinth in its skull. This is like a chamber with very thin wrinkled up skin that has millions of tiny blood vessels in it. When the Betta takes a gulp of air, it goes into this chamber where gasses are exchanged in a similar way to what happens in our lungs.

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15y ago

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