The Queen looked at Zhao Hai in a daze. She knew very well what the change in the messenger fish meant. It was not as simple as a mutation. Once the entire Messenger fish evolved, it would become more advanced and better.
The messenger fish was a small and unremarkable magic beast, but it was a magic beast with a particularly poor ability. It was much more difficult for this magic beast to evolve than ordinary magic beasts.
To put it bluntly, although the people of the sea were also called humans, their bodies were very different from humans. The reason why the mermaids had studied the magical beasts and races in the sea so seriously was to find a way to make the mermaids and the races in the sea more perfect.