Something to keep in mind is that the Ejinn, the Xaela tribe you're referencing, likely develop their aquatic skills through practice and training--it's less about the tails, and more about holding their breath. Something like that? You hone. They just have tradition placing a greater importance on it.
If you want a Raen who's more comfortable/adaptable with water? I see no reason why they can't be, and there's a variety of reasons/explanations you can use.
If you want a Raen who's more comfortable/adaptable with water? I see no reason why they can't be, and there's a variety of reasons/explanations you can use.
