The combtail is a species of fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 in the Osphronemidae family which is endemic to Sri Lanka

Sri Lanka

Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...

. The Combtail, in addition to normal 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.

Fishkeeping

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. They will eat almost any food presented to them including maggots, bloodworms, flake, pellet,and vegetable foods.