I hear over 1 foot(likely a mix up between the true goliath and this one) ,and I also have read "Sizes in excess of 6" can be expected, we have heard reports of individuals of 9”." So how big do they actully get because im interested in getting one to live in my 55gallon ,but would not be interested if they don't get huge. I might just go with a cane toed ,but any info on the Conraua alleni's normal size would be nice.