So when I first started keeping frogs they were called "White's Dumpy Tree Frog" and you could have Blue or Green (or White if you were really really really lucky). In general the "Blue" (see the other thread for color questions) are the Australian phase and the Green are Indonesian. The tiny frogs will get bigger, it's fairly common to see the froglets for sale. Be conscious of the fact that froglets are more difficult to care for than adults because they are more fragile (sensitive) and require smaller food sources. I like to buy adults or sub-adults whenever possible, but sometimes its not. No matter what size or "morph" (subspecies?...I hate taxonomy) they will prove to be a great pet.

Best of Luck,
Alex