Well I bought what appears to be a male midas and it's about 3-4". I picked him at petsmart for $7.99 and it was ruler of the tank. I got pics of him and Paco, my other midas. Well here's the pics:
Thanks everyone. I am going to build a pond soon and it'll hopefully be built for next summer and it'll hopefully be over 200 gallons so I can move the midas, black belt, and maybe my convicts into it so they can grow bigger and become monsters.