Derasa, Squamosa and Gigas can grow 4"+ a year. Crocea and Maxima, roughly 1-2" a year. Max sizes are roughly 16" for squammys, 12" for maximas, 20" for derasa, 9" for crocea and gigas can grow as large as 4 feet! Yeah he grazes all the time, even at night. This guys is always on the hunt for food.