For the record, I think the differences are because of slight variation in the angle/curvature of the body and tail. As someone said above, even if you think you see a difference- the odds of two little nebula clowns on divers den in the same week having sooooo many identical markings... like seriously it would be remarkable. I try to pick the tiniest mark or feature on one and you can always see it, or a hint of it, in the other. Everything. The general shape of a color gradient, a little jagged edge, a little curve here or there... it’s all the same except things that are probably the tail being mid wag, or the fish being angled slightly.
We shall see! Good times, guys lol