Anabas testudineus fish is the name of a type of freshwater fish which in Indonesia is also called by other names, namely Betik fish , Betok fish , puyu-puyu fish , papuyu fish . Taxonomy of Anabas testudineus: Kingdom: Animalia Phylum: Chordata Class : Actinopteri Order: Anabantiformes Family: Anabantidae Genus: Anabas Species: Anabas testudineus Anabas testudineus fish is classified as a small fish because it can only grow up to a maximum length of 25 cm, but in general this fish is found only about 20 cm long. The size of the head of this fish is larger than the body. Anabas testudineus fish has hard scales. The back of the gills has a serrated cap, sharp and has a thorn-like texture. Anabas testudineus fish or papuyu fish are known for their ability to climb to land, therefore this fish is also known as climbing gouramy or climbing perch. In the waters, although this fish breathes using gills, the Anabas testudineus fish is able to take oxygen in the air directly. This fish has a l...