An order of teleostean (bone) fish, including the Anabas, or climbing perch, and other allied fishes.

The Anabas fish are remarkable for their power of living a long time out of water, making their way on land for considerable distances, and for climbing trees; a climbing fish.

They have, connected with the gill chamber, a special cavity in which a labyrinthiform membrane is arranged so as to retain water to supply the gills while the fish leaves the water and travels about on land, or even climbs trees.