Like Cellophane, these are colourless Betta splendens both in the body and fins. The difference is the eyes also show no coloration and are therefore red in appearance. Albino is the one of the rarest Betta colours. Breeders suggest that only one Albino in 10,000 actually spawn. Albino is actually a genetic defect that causes loss of colour pigmenting. A characteristic of any Albino fish is that the eyes are red.
http://www.thatfishshop.com/ichthyology ... olours.htm
I would really love to see pics of peoples half moons. I keep hearing that lots of people have bred them but have only seen three peoples actual spawns.