It is usually quite easy to differentiate between the male and female betta fish by appearance, but there are other subtle differences between the genders of the fish. You must be aware of these ...

What is a betta fish ... Before mating, the male spends hours blowing bubbles at the water’s surface to build what’s called a mucus bubble nest. He then puts on a display to attract a female ...

Male betta fish try to politely entice a female ... When he's done, the male aggressively drives away the female and guards the bubble nest until the eggs hatch, 24 to 48 hours later, according ...