Bubble Nests. Generally, only male bettas blow a bubble nest. Again, this is not absolute, as occasionally a female will blow a bubble nest. However, those instances are fairly rare.

Flipping the female upside down, he wraps his fins around her, and fertilizes eggs as she releases them. After a short rest, they repeat the process several times. Like seahorses , male bettas ...

Male betta fish try to politely entice a female under the nest at first, ... flips her upside down and fertilizes her eggs. After he lets go, the female remains suspended belly-up, ...