>>42998858What about species such as seahorses and pipefish? In this case, the male carries the young in his pouch (I'm sure you're aware of this, but others in this thread might not be). For these species, females actually compete over the males, and males choose larger, more aggressive females.
Now, this is admittedly quite unusual. I think there are also a few species of birds that have the male take on larger parental investment. Anyway, a pokemon based on that type of idea could be cool.