I've been browsing around Aquabid for a new male betta, and I'm looking for one that's quite young. Most of the posts I've seen say that their bettas are between 3-4 months old (which I want) but the pictures show males with very well developed finnage, which doesn't seem right for such a young betta. Can anyone tell their ages more accurately than I? Has anyone run into this problem before?
Here's two random bettas I was looking at that didn't look as young as was claimed (I'm looking at US breeders only):