Hmm… honestly compared to the stuff I’ve managed to encounter today femboy Garfield is practically a sight for sore eyes… I still I don’t like it though-nyah.
Biology major here: correct. Female seahorses put the eggs into the males' pouch, and the male fertilizes and carries them to term.
Clownfish, when the dominant female dies, the dominant male will undergo sex change into a female and let the next dominant male breed it. So when Nemo's mom died, realistically, Marlin will...
The fish are all kinds of fucked up. Some species of anglerfish... the female ones quite literally absorb the males into their own bodies to become pregnant. And blobfish looks like, well, a blob, is because the air doesn't have enough pressure for its body to stay in the right shape.
They're like that only because they belong deep underwater with immensely high pressure. They look normal when they're in their habitat and not captured all the way up here, where no pressure is there to suppress them, thus their flesh expands and collapses...
Cuttlefish: normally the alpha (biggest, baddest) male mates with the female. But sometimes, the smaller beta male can pretend to look like a female, sneak into the... "joining", and breed the female himself. Meanwhile the alpha male thinks he's getting lucky with two females, not knowing he just got NTR'd by a femboy.