The climbing perch (Anabas testudineus, Bloch) is a [2].
well known member of the Anabantoidie family which In Bangladesh this fish, locally known as Koi, is
derived their name for bearing labyrinth like highly esteemed for its highly nourishing quality and
accessory-breathing organ. This fish species, indigenous prolonged freshness out of water and a valuable diet for
to South and Southeast Asia including Bangladesh, sick and convalescent [3]. It is also believed to have
Pakistan, Nepal, Srilanka, Burma, Thailand, Vietnam, medicinal properties such as disease prevention; and
Indonesia, Singapore and China, is found in fresh and slowing down the ageing process for females [4, 5].
brackish waters mostly in ponds, swamps and lakes of This fish is suitable for cultivation in ponds, reservoirs
these regions [1]. This fish, due to its air breathing ability and rice field. Though International Union of
and tolerance against adverse environmental conditions,