Fish are also right, on the left as human

Scientists found that when fish grow, they develop a hobby or right-to-left or more left-handed by relying on which side of the mouth is more edible.

In the latest study of Nagoya University, Japan, scientists investigated the development of pros in behavior in cichlid fish , like Perissodus microlepis (a species of the family of Emperor or family). Tilapia, concentrated in Lake Tanganyika, Africa).

Cichlid fish, scientific name Perissodus microlepis, lives concentrated in Lake Tanganyika, Africa grows in favor of adult behavior.(Photo: Wikimedia).

Many previous studies have also identified many animals, including humans, chimpanzees, toads, mice and invertebrates such as crustaceans and insects that have left or right expression. Considering the cichlid species alone, the scientists found that when the fish matures, they are right / left-handed depending on the fact that the mouth is much eaten.

"This research is really important because it allows us to see the development of mouth-oriented according to age as well as the relationship between forward-looking behavior and oral asymmetry ," said Yuichi Takeuchi, who leads the group. study explained.

Cichild fish.(Source: Nagoya University).

By examining the stomach of nearly 200 cichlids, from immature to adult animals, scientists were able to determine the age of the fish through diet. A typical example is that the baby cichlid has a deflection mouth (asymmetric) that usually attacks the prey on both sides, while the mature fish only attacks on the right mouth.

"We found that, during fish development, oral asymmetry increased with the priority that they used to attack. This is an interesting finding, because it is the first experimental evidence. about the development of forward-thinking behavior " - Mr. Takeuchi added.