The Double Tail Betta fish has two tails due to a genetic mutation.

Betta Fish Tail Types - Which Betta Fish Type Do You Have? | Animal Bliss
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I have heard stories of bettas and discus fish getting on fine, although it is something you should keep an eye on, their colors and shape can be a little intimidating.
Find the right plants for a cute DIY Betta Fishy playland with our simple guide inside!
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@anonymous: Didn't say it was fact just saying that mine don't fight. I do think that a lot of people think they are the authority on bettas and put out by the book info on them, I think it's a case by case situation. Every fish is different Betta Fish Tail Types - Which Betta Fish Type Do You Have? | Animal Bliss
Photo provided by FlickrApple iPhone 6s Wallpaper with Red and Blue Betta Fish and Dark Background in 750x1334
Photo provided by Flickrsiamese fighting fish, betta fish on black background
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A couple of months ago, I stumbled upon a photo on Facebook and was totally in awe of the Betta fish tank by . Here’s the photo below (I’ve edited the size of the photo to suit the site’s criteria):Another reason to get a Betta fish is the freedom to choose a multitude of colors or patterns to fascinate admirers with an alluring aquarium. They are considered as one of the .If you are like me and have a strong passion for freshwater aquariums, you have probably considered incorporating Betta fish to your tank. I’m sure you’ve heard how wonderful Bettas are and how beautiful they can be.Betta fish are called the Siamese Fighting Fish because of its behavior towards other males of the same species. You cannot keep two or more males in the same tank. If more than one male fish are placed in the same tank, they will fight until only one of them remains. They will flare out their gill covers and erect their fins showing the other fish their fighting posture. This behavior is also why they are kept separated in small containers at the store.The Betta fish is probably the second most popular fish kept, after Goldfish. The Betta Splendens is a favorite because of its beauty, its long fins and because bettas are relatively easy to care for. The male sports deep beautiful colors whereas the females are less colorful. Their stunning colors and flowing fins are some of the reasons for their popularity and the inexpenive purchase price (usually less than 5 dollars) helps too. However, due to this fish being such an easy sale it has led to some deplorable conditions in which they are kept while waiting to be sold. It is really sad to see how the Betta is kept in many chain pet stores in small jars or small cups, often in very soiled water.There’s a reason people of all types love bettas. Sometimes called Siamese fighting fish, these feisty fish pack a lot of personality into a very small package and make great pets for almost every living situation. You’ll find them right at home on a desk at the office, enhancing the look of a livin...There are ways to see this behaviour without introducing another male betta fish. One way is to use a small hand mirror and place it up against the tank glass so that the male may see his reflection. The Betta will mistake his reflection as another male and the fighting posture should then be displayed. Doing this too often may lead to an overly stressed fish though.There’s a reason people of all types love bettas. Sometimes called Siamese fighting fish, these feisty fish pack a lot of personality into a very small package and make great pets for almost every living situation. You’ll find them right at home on a desk at the office, enhancing the look of a livin...