What is a betta fish? Betta fish—also known as Siamese ... and are a dull gray, green, olive, or brown. Before mating, the male spends hours blowing bubbles at the water’s surface to build ...

Which betta fish tank is best? Betta fish are a popular ... At night, the light should be turned off or swapped with a bulb that provides a blue or purple light. Many tanks include an LED lighting ...