Have an Umbee(unsexed) in a seperated 180g tank. Hasn't grown much in the past 3 months. Was about 6" in september. Is about 6" still. Not very active either and I never see it eat. Water is 78-80 degrees. I feed once a day, either hikari gold or a cichlid carniverous stick. 30-50% water changes once a week. What am I doing wrong....Its to the point where my Festae and Odo fry are catching up in size. One of my Odos is in the same tank as the Umbee and he's growing like a weed....