@Thorvald: XD listen we're here for ✨vibes✨ only, don't have time to think about the actual workings of fish people lmao!
That camo scheme is exactly what drew me to this character in the first place! It's so hypnotizing ... I realize I would be the first to die
Putting the gills on the chest, i.e. analogous to lungs, is one of the shrewder anthropomorphic interpretations I've seen for fish people. I'll leave the question of hydrodynamic practicability to accredited marine biologists. :P
That camo scheme is immensely aesthetically satisfying.