The enlarged double tails cause this Betta Fish to have a shorter body than normal, giving it a cute appearance. The award for having the most dramatic tail on our list goes to the Half Sun Betta ...

Learn visual and behavioral cues to distinguish male from female bettas. Reviewed by Nick Saint-Erne Male bettas often have ...

The betta fish, commonly known as the Siamese fighting fish, is one of the most common fish pets in the world, coming second only to the goldfish. It is usually quite easy to differentiate between the ...

What is a betta fish? Betta fish—also known as Siamese ... He then puts on a display to attract a female, becoming brighter and spreading out his fins. If a female approves of the nest, she ...

The male does this for hours until a thick nest of bubbles forms. Then, he pursues a female. Male betta fish try to politely entice a female under the nest at first, flashing their fins and ...

In 1975, scientists tried spaying a few hundred female betta fish. We all know what happens to spayed cats and dogs: They become sterile. Betta fish are different. A third of the surviving bettas ...

as this yellow half-moon betta is about to do. The flowing fins and vibrant colors of the Siamese fighting fish we know today result from centuries of selective breeding. Scientists believe it’s ...