See the fish
Maybe everyone will think that fish swimming is a genius ability because they have lived in the water since they were born. However, in fact, the newly hatched baby fish may have very poor swimming skills and may die as a result.
According to the "Survival Science" report, when the small fish larvae have just hatched from the eggs, they are also "staggering" in their unremitting efforts to survive. Approximately 99% of fish sacrifices occur in the juvenile stage. Only as they grow older are some fish better able to evade predators. Adult fish will use the "break and slide" method to quickly escape the pursuit of natural enemies. This method allows them to quickly accelerate and then slide "head-hugging rats". For many fish, they are not geniuses in mastering this method.
For a long time, scientists have speculated that it is probably because the body weight is too light that it is difficult for these small fish to obtain enough energy during the "breakthrough" stage. Perhaps their bodies are too small, and the guiding water blocks them like thick syrup, making it difficult for them to "slide" well.
However, the results of a latest study put forward a different view. This study, which used zebrafish larvae as subjects, showed that the poor swimming ability of small fish is due to their incomplete development of lateral fins and swim bladders, which prevent them from maintaining body level. The researchers also said that their study may also be applicable to other types of fish.
The leader of the study, Heyrik Muller of Wahanningen University in the Netherlands, said that energy factors may explain why some fish are not good at swimming, but not all cases are like this. Moreover, it is not possible to use the different sizes of fish to explain the differences in their gliding abilities. "When many small fish hatch, their pectoral fins are not fully formed, and all fish hatch without a swim bladder. Therefore, they may face the same problem of not being good at swimming."
</p>
</p>