So I've had my first 2 rays for just over 3 months now and though I would start a journal of how they develop/progress. Male motoro and female bd cross from day 1 to today growth differences attached.. I have had them in a 4ft tank for first few months to make sure they were feeding well and fatten up a bit... have just moved to 8ft tank and took some pics before putting into tank.. Really happy with the progress so far and really enjoying seeing their personalities come out!