My LFS has these fish. I can't seem to find any info on them. Are they just a color variety of the tinfoil barb? Do they get the same size then? They look like almost white with a hint of purple tin foil barb.
If it is a tinfoil barb it is a dyed one. Ask the store what they are and get a species name if possible. That will help us to help you. Find out more info.