Your cories could be albino varieties of a number of cory kinds, so it can be tricky to say what size they should be when fullgrown. I think the most common ones are albinos of bronze and peppered cories, and these grow to a little more than 2.5 inches. How long have you had your albinos?
I have two myself, and they're pretty small as well. I've heard that they grow to max sizes after a year or so. If it's not a smaller variety, it could just be that thy're young.
Hi all, over the years I too have noticed that the albinos are alittle smaller than the other cories. So I would say it is normal. My albinos, same age are alittle, but not much, smaller....Glee