Male betta fish, like the betta splenden, blow bubbles and build bubble clusters (nests) for reproduction. It's the first step in the mating process with nest building starting as soon as they are old enough to reproduce.
Why is my betta fish making bubbles?
Betta Fish Bubbles are like a foamy love nest for prospective mates. Since bubbles are constantly lost the male will periodically blow bubbles each time he gulps at the surface for air (remember that Betta Fish are partial air breathers, thanks to their labyrinth organ).
What to do if your betta fish is blowing bubbles?
But there are a few things you can do to make it more likely that the fish will set to bubble blowing at the tank's surface:
- Keep the filter flow at a gentle setting so there's not a current that would blow the bubbles away. ...
- Put floating décor in the tank. ...
- Keep tank temperature between 78 and 82 degrees Fahrenheit.
