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 ...

We may receive a commission on purchases made from links. There are over 70 species of betta fish, with the most common pet varieties being the crowntail, delta, double tail, and halfmoon.

Betta fish do particularly well with a light source that mimics a natural day-night cycle. Use an aquarium light and provide 8–12 hours of light daily, followed by darkness for rest. Make sure ...