Betta fish—also known as Siamese fighting fish ... wild bettas are smaller with shorter fins, and are a dull gray, green, olive, or brown. Before mating, the male spends hours blowing bubbles ...

Betta fish, also known as Siamese fighting fish, are a popular choice for those who want an active and beautiful pet fish. They’re also a great starter fish for children. If you just brought home your ...

These colorful patches appear with shimmering, iridescent scales. More expensive koi betta fish might have splashes of blue, green, pink, or purple. Koi betta fish tend to be aggressive and unfriendly ...