Ive had this guy for almost 2 yrs now and when i first bought him he had a nice litlle nuchal hump he was about 2ins. long. It went away shortly after bringing him home. In these pics hes now about 10ins. And still no hump. He was in a 60 gal until about a month ago now in a 75. I ran a fluval 306 canister and a 350 biowheel on the 60 gal and now with the 75 gal i added a aquaclear110. And doing 50% to 75% water change weekly. Also i feed him hikari cixhlid gold, and a few times a week cleaned earthworms, bloodworms , and emeralds entree. So what is going on is it female possibly? Or just not good genetics maybe?