I'm not sure if this is the best forum for this question but here it goes:
My Betta Harley recently made a bubble nest (I'd only had him 2 days) and he seems to be "guarding" the nest a lot. He always seems to swim around the surface now. He did a bit before but now it's about 60% of the time. Is he just protecting the nest? He's starting not too swim around them as much now that they are starting to disappear, so there's less to guard? How normal is this? Now that there's less bubbles, are they "popping" as time goes on or just sinking?