You know I was thinking the same thing. Levi is a mainland hatched 6/19/16 and he's about 5' just under 2 pounds and eats weekly. His meals average 120-130 grams. Maybe I've been underfeeding him a little? Never had a pushing issue but he is ALWAYS hungry. Thought that was just retics though.
Or maybe they all grow quickly while young regardless of SD/D/Mainland percentage to make them less vulnerable to predators? They all just top out at different sizes due to their natural environment, conditions and resources based on locality? Never owned a SD/D so just throwing thoughts out there. Regardless, you all have some good looking retics