I think it's a mammals only thing so fish hybrids probably wouldn't be included in this universe if they were I'd hope they genetically have higher immune resistance to things like that.
According to Sex Pistols, mermaid types transform partially if I remember, so I guess they would kinda flop or drag themselves. They're more in danger of getting ill or dying of low temp/bp, especially when they get too cold or during bad weather
This story I think is mammals only, but I'd love to see another omegaverse do fish types again tho. It's been forever
I've read some mermaid novels where the mermaids have something like a wheelchair with water lol so they can move around outside of an aquarium or pool.
wait that's actually really cool, might have to check it out lol, thank uuu :)
would fish people just flop around if they transformed outside like sachio?