>>50885368Yes, but with powers a single pokemon can easily fulfill the ecological niche of thousands of species
You need an aquatic organism, a water pokemon can live in salt water, fresh water, brackish water, radioactive waste or even in an ethereal sea. (Just watch the Gyarados swim and fly wherever they want)
They need an apex predator, you can choose any carnivorous Pokemon and in just a couple of days all the normal fauna will be extinct, that generates an imbalance, no problem just use a Guzzlord and reset everything.
In a world where a creature can fart and restore life, our fauna, including microbiota is unnecessary, everything can happen or be compensated with "magic"