The same process that one uses for selectively breeding the delta tailed Betta are used when breeding for theenhanced version called the half moon tail. In order for a Betta to be considered a true half moon Betta fish, thecaudal, or tail fins, must extend 180 degrees from each side.
half moon tail betta fish breeding - YouTube
The Halfmoon Doubletail Plakat Betta also known as Siamese Fighting Fish. Known best for their beautiful fins and color. Bettas can breathe from their labyrinth organ which enables the fish to breathe from the surface. Minimum tank size: 1/4 gallon
Halfmoon Betta Fish Care and Tips | PetHelpful
The popular Betta, as it is known in the United States, is an equally combative Siamese Fighting Fish. Wild male Betta's have short rounded fins and the beautiful specimens available in pet stores today have been developed from this wild variety. Their fins can be short to very long and flowing. The most commonly available are the Veil Tail Bettas but there are many others. Fancy Bettas range from those with a double tail fin to those with a crescent or half moon tail fin, and others with a crown design to all their fins. Only the male has the long fins though. The female's fins will be shorter and females are generally more drab in color. When agitated both sexes will flare out their gills and fins making an impressive display, These captive bred aquarium specimens don't lend themselves to a combative type of sport however. Their long flowing fins are very delicate and will actually fray if even the movement of the water is too fast.
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