I kept leo's almost 20 years ago. I cannot remember at what point they stop steadily growing. I ask because I have a male Tremper albino whose exact hatch date I do not know. I know he was young but not a brand new hatchling when I got him. My best guess is that he is maybe 14 or 15 months old. He is about 11.5 inches long. As of his weigh in today, he is now 120 grams. His last weight in was July 2nd, so 9 days ago, at which point he was 118 grams. So he is still gaining. He really doesn't eat that much. I would think he has to slow down at some point. I mean really, how big can he get?