I've read they can get as large as regani, ie 6" for males but I've never seen a noto, regani, or wallacii ever that big. But this is the first time I've had wallacii, and since the colombian ones might be a differant species, it might be hard to say. Mine deffinately haven't grown at all though, despite all the goodies they get. My largest male and female are both about 3.5" SL, the smaller male and female are only about 2" SL.