A crown tail betta is a type of Siamese fighting fish with spectacular fins and tail. The huge tail and fins seem divided into the points of a crown and have intense colors. One type of crown tail betta has a split tail, while the other type has a tail that's teardrop-shaped. Only the males have these extraordinary tails, though females can be just as colorful.
Though bettas are docile toward their owners, they can be aggressive toward other fish and should be kept alone in a tank. This is especially true of the males, who become aggressive even toward their mates after breeding.
Females and males are placed together only to breed. The male prepares a bubble nest near the water's surface, fertilizes the eggs laid by the female and then places them in this nest. The fry hatch after a day or a day and a half, and the male guards them for a while.
Bettas do best in tanks that hold at least 1 gallon of water. The water should be between 75 and 86 degrees Fahrenheit, and the pH should be between 6.0 and 8.0. Bettas are carnivorous and eat freeze-dried brine shrimp and bloodworms as well as other high-quality betta food.