SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/fish-betta-breathes-air

How can bettas breathe air at the water's surface?

A labyrinth organ above the gills.

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  1. A labyrinth organ above the gills ✔
  2. They have small lungs
  3. They absorb air through their fins

Why: Bettas are labyrinth fish. A folded organ above the gills lets them gulp air at the surface, which helps them survive warm, low-oxygen puddles. It also means they need easy access to the surface.

Huh, didn't know that: Male bettas build bubble nests at the surface to protect their eggs.

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What did one fish say to the other in the tank? Do you know how to drive this thing?
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References

Answer: A labyrinth organ above the gills. Bettas are labyrinth fish. A folded organ above the gills lets them gulp air at the surface, which helps them survive warm, low-oxygen puddles. It also means they need easy access to the surface.

  1. UF/IFAS Extension FA212: Evolution, Culture, and Care for Betta splendens ask.ifas.ufl.edu/publication/FA212
    Labyrinth fishes take their name from a specialized air-breathing structure called the labyrinth organ.
    Checked 2026-10-11.

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