Well, they are definitely some kind of tetra, I can tell you that much! Hard to say since there are many tetras with quite a similar body shape so lets go for trial and error. First guess, albino buenos ares tetra-
I think what you have there Chris are Blind Cave Tetras (Astyanax jordani), as the one in your pictures appear to have no eyes. These fish are also known as Mexican Tetras or just plain Blind Cave Fish.