What is a special adaptation on a betta fish and what it is used for?
I guess you are referring to the Bettas “Labyrinth” this is a chamber in the skull of the fish that allows it to ‘breath’ air. This adaptation is what enables the fish to survive in adverse (low Oxygen) water conditions in the wild. When you see a Betta rise to the surface of the water and take a gulp of air he is using his ‘labyrinth’.
