I used to have 5 fish years ago in England that were basically
modesta shape but baby blue in colour with ALL yellow fins. Beautiful fish.
I kept them with regular deep coloured modestas and the big boss Alpha used to literally swim through the pale blue ones as if they didn't exist. Very weird behaviour. You'd have thought they were invisible.

Picture: Ken Childs
Like this, but really beautiful pale blue metallic.
Years ago I saw a tank of fish that looked superficially like the one's Emma has (which match what I have now) but they were slightly longer bodied with extremely thin, hazy stripes bridging the lateral line (like some Skunks have.) They were around 3.25" SL too, not babies.
Martin.