I cannot guarantee how big it will be but if mine doesnt split soon I am going to induce a split. Its just getting too big 12"+ I would estimate, and I have had it for over a year and a half without it splitting. If/when it does and if you havent acquired one yet I will let you know if there is a clone available. My specimen was purchased as an tank raised clone too not wild caught. To be honest and not misleading because this isnt the norm. It is extremely tolerant to water chemistry changes and swings. In my early days in this hobby, there were mistakes, I often wonder how shes still alive. LOL.