There are no mouth brooding Bettas. Betta males will roll eggs and fry around in their mouths to clean fungus off of them but they won't rear the fry.
Crowntails are a genetic variant resulting in longer fin rays, giving the appearance of a "crown" when you look at the tail vertically.
Crowntails are a genetic variant resulting in longer fin rays, giving the appearance of a "crown" when you look at the tail vertically.