I bought them as juvies in December, and they get around 2-3" long. Super active. Not much flying, but love to climb and look for food.
Very little info about them on the net, and what I have found contradicts each other often.
Two facts that seem to be common is that they don't eat plants with the exception of hair algae occasionally, and that adults can fend themselves from larger fish such as angelfish.
Excellent cleaners of food on the floor and eat pest snails.
I'll try to get some more pics later. Still trying to understand how to tell the difference between male vs female, but they may not be old enough to have fully developed claws yet.