Most fish can't cope with huge, dramatic changes in a short period of time. They would at least need a few hundred years, especially for prehistoric fishes.
One way fish adapt is by changing gender.
Adapt
No, the fish in Antarctica adapt to the environment's temperature.
Fish adapt by swimming really fast
migrate
they just get used to it after a while
They die
a fish's buthole
Humans adapt by creating technology that makes life easier
It cant, fish need water to survive.
Fish adapt to the pressure.
it just the nature of there life