Very nice pics! He is gorgeous...such nice clean lines and wow! on the fins...so nice and even! He does look like he has grown, filled out more. I just can't get over how huge and even is fins are! Nice to see an anal Fin that has remained in proportion to rest of fins and that isn't noticeably darker in color than other fins. Lately, on aquabid, the anal fin is all I notice as it's so much longer; it not only sweeps the floor, the anal fins has grown an extra couple of centimeters past the bottom edge of caudal fin. And it's so dark; for example, if the betta is marked as a lavender salamander HM, the body is pale lavender, the dorsal, caudal, and ventral fins look like a blue over red that has been whitewashed, but the anal fin is dark purple or dark blue over red.
That stinks that you had to pull him out...at least you got to see what a great dad he was!