Moonlight gourami in the floodplain of the lower Mekong. The moonlight gourami eats insects, crustaceans, and zooplankton. Like all labyrinth fish, the moonlight gourami has a special lung-like organ that allows it to breathe air directly. Because of this labyrinth organ, it is not unusual to see it go to the surface and gulp air. The ability to breathe air allows the moonlight gourami to survive in very low oxygen situations. In fact, if it remains moist it can actually survive out of water for up to several hours. As with other labyrinth fish, these species are oviparous and employ bubble nests
Pygmy gourami Its native habitat is slow rivers, rice paddies, ditches and small ponds. It is most commonly found in standing not stagnant water (including waters with low oxygen levels) that has a dense cover of floating plants. The pygmy gourami can survive in these waters because of its labyrinth organ, which allows it to breathe air from the surface. Its native habitat has a pH of 6.0 - 7.5, dH of 5 - 19, and temperature 25 °C to 28 °C (77 °F to 83 °F). It feeds on zooplankton and aquatic insects. The pygmy gourami can be found in the