More Betta, AKA Chinese Fighting Fish, information that you didn’t know you needed to know . . . and of course a Judiaku, prompt “Bubbles.
“Why does my male beta fish make foamy bubbles & what can I do to stop it or keep his bowl cleaner w/o a filter? These foamy bubbles are at the top of his water and make a messy ring around his bowl.”
“Your male betta is getting ready for a female. He makes a bubble nest then courts the female. Wraps himself around her, she goes limps and her eggs fall out, while she recovers, the male gathers up the eggs and puts them in his bubble nest. There is not really anything you can do you keep him from making one. If you put the bottom of a styrafoam cup in floating in the tank, he will make his nest in their and it won’t touch the glass. When they do bubbles that means they want a mate. All males do this.”
All males blow bubbles
When they want to have their way
Females simply blow
(Don’t say I didn’t warn you . . .)