The Double Tail can be seen combined with Plakats, Halfmoons, and even Crowntails. It is a genetic trait that

Double Tail Betta
Double Tail Betta
Originated From: Thailand
Approximate Petstore Cost: $4.00
Fin Type: See Below

causes the caudal fin to grow into two lobes rather than one. The genes that cause this also cause the body to be shorter and the dorsal and anal fins to be very broad. As the body is effectively stunted in length, Double Tails are more prone to swimbladder problems and this also affects fry survival rates.

Community content is available under CC-BY-SA unless otherwise noted.