Air that the paradise fish sucks into its mouth enters the labyrinth chamber, which connects its throat to its gill chambers. The labyrinth chamber is full of capillary blood vessels, and oxygen in the air is absorbed into these capillaries to pass into the fish's body.
迷器位在腮的上方，蓋斑鬥魚吸入嘴巴的空氣，進入連接鰓室與咽喉的迷器腔時，腔室內的毛細微血管將氧氣吸收，其他氣體就經過鰓蓋排出體外。