mines at the 21" mark currently I believe. This one didn't grow for like the first 4 months I had him then one day I came back from military training and he was like 15" long lol.How big is yours atm? I think mine is about 10", which I think is slow since he was 3" in December/January when I got him. I remember my other normal Channel growing much faster than this and by 8-10 months later I had to give him a whole HANDFUL of pellets to himself .....something is amiss, I think. He should be at least 16-18" by now, IME