It’ll be those tornadoes that pick up fish and dump them imo.
Or they just evolved according to their environment like everything else.
Are lakes really old, in evolutionary terms? And if the fish in lakes evolved independently, in such a closed environment, how come each lake doesn't contain specific species unknown anywhere else?
Are lakes really old, in evolutionary terms? And if the fish in lakes evolved independently, in such a closed environment, how come each lake doesn't contain specific species unknown anywhere else?
How do you know they don’t?
In fact, most lakes have been fed by rivers/the sea in the past and only became lakes after geological shifts.