Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The combtail is a species of fish in the Belontiidae family. It is endemic to Sri Lanka. While the Combtail (or Combtail Gourami) is sometimes found in fish shops, it does not make a good pet unless kept by itself. In a community tank it will bully other fish, and may injure or kill them. The Combtail, as well as the usual gills, has a Labyrinth, or rudimentary lung-like organ which enables it to survive in poorly oxygenated water, or even out of water, for considerable periods of time. Combtails can often be observed taking gaseous air from the surface of their tank to replenish their labyrinth. They will eat almost any food presented to them including maggots, bloodworms, flake, pellet and vegetable foods.