The liae fish swept away the air when fighting

Comparative Biology and Physiology published the study of British and Australian scientists, showing that Siamese fish can breathe on the surface of the water in addition to traditional breathing methods with skin and skin.

Dr. Steven Portugal at the Royal College of Veterinary Medicine in London and colleagues at the University of Queensland (Australia) staged a fake battle scene, giving two Siamese lettuce (Betta splendens) in two transparent pots. each other in the lab.

Asian lettuce fish can come to the surface to catch steam when fighting - (Photo BBC)

Thereby, they analyze the air in the tank before and after the match to learn how to mobilize their strength and breathing when fighting.

In order to maintain strength in the battle, scientists found that male Siamese fish often swim up to breathe air on the water to get oxygen to the body.

According to Dr. Steven Portugal, 'it seems that small couples who live in water have low levels of oxidation, which are not enough for the giant fish to survive the intense battle so they need more breathing'.

Another feature is that the two fighting fishes often go to the surface to breathe air quickly at the same time because they both do not want to create a good opportunity for the opponent to attack. However, the risk of being attacked can also fall at the right time while swimming or swimming off the water to continue the match.

Wild sardines often live in ponds, swamps and rice fields in many Southeast Asia. The ability to breathe with gills and skin while taking more air on the water is a characteristic feature of an Anabantodei group.