There are thousands of worlds under the heavens, and there are no wonders. Recently, a team of researchers from Nagoya University in Japan published a study in PLOSONE: a small scaly chicosaurus species distributed in Lake Tangakha in Africa as a model organism to reveal the phenomenon of behavioral deviation. The team found that this fish, which feeds on the scales of other fish, gradually develops behavioral laterality during development, tending to use only one side of the mouth to tear off the scales.
By analyzing the remnants of the stomachs of more than 200 small-scaled chicchinis at various stages of development, the research team focused on the left and right proportions of the scales they ate. This helps to finally determine the age at which the small scaly cynods transition from "two-sided attack" to "unilateral attack" when attacking prey. Measurements of their jawbones also showed a gradual increase in the asymmetry of their mouths. The direction in which the prey is attacked depends on the asymmetry of the individual mouth of the fish.
Both "left-handed" and "right-handed" are present in the small scaly radish. At their young age, the degree of skewing of the mouth is not significant, and both sides are taken into account when attacking prey; but when they grow up, the greater the degree of skewing of their mouths, the more fish scales that can be populated, and the more fish scales that can be populated, which has obvious advantages over the same kind of people with low degree of mouth skew. This selective pressure drives the juveniles to adapt as quickly as possible to attack their prey in the direction of the skew of their mouths.