I bought my first betta a week ago, named Moe. He is a beautiful blue and pink little guy, I don't know how to classify him by his tail yet.
Anyway, I keep reading posts from this community and other sites that their bettas started creating bubble nests less than a day of brining their new fishy home. At the local petshop where I bought Moe some of the other bettas that were put into small vases/fish bowels with live plants on the top have quite nice bubble nests going. But my betta hasn't made one yet! He hasn't squeezed out a bubble!
I don't think its a super serious issue with him, but don't bubble nests = security and comfort for a betta? Moe is adjusting to his food well (Hikari pellets) and usually swimming around energetically in his 1.5 gal tank since I got him, plus I got him a little mini heater today for the Winter and cold nights. He seems happy but why no nest?