I was wondering, do males ever stop making bubble nests when they reach a mature age? I was curious as to why Frank was no longer making the giant bubble nests he used to, then remembered, I've had him for a year and 4 months now! He was pretty old looking when I got him, so maybe he has reached a more mature age? I have no idea.
Anyway, just a question for my curious mind. :) Thanks~!
Keep in mind that bubblenesting is purely instinctual, and it's reliant on a few environmental factors as well. If there's any surface agitation or if you have hard water or dry air above the tank, the nest likely won't form even if the betta is trying to build one. Some studies have shown that some bettas react to changes in barometric pressure that occur before a storm. You can encourage your betta to make bubblenests by adding indian almond leaves to the water, or by simply floating something on the surface like a piece of styrofoam cup, or cut out a piece of paper plate.