Nice find there. Looks like it'll grow up to be a real stunner once mature. Looks to be a kamfa to me so I wouldn't expect too much for kok growth but that ain't such a bad thing, that just means it won't have all the health and swimming problems that comes with a big kok.
Btw mind if we see a pic of the tank it's in atm? Also if ya don't mind, what have ya been feeding it so far?