Hello! So this is my first post, because of something rather odd I found my Betta Beau doing today... He burrowed into the rocks in his bowl, between them and the plant. Here's a picture
So first I panicked and got him out. Then not 5 mins later, he did it again. Well I figured I'd wait to see if he could get out, and if not, that he could learn a lesson not to do that at least... Well he got out, and seems to be swimming in there then back out... I'm worried that he will get stuck eventually though, or what if he chooses to sleep there? Could he suffocate? They're glass pebbles and both them and the plant are brand new, I bought them today because cleaning his old substrate was a pain. He lives in a small 2L cube that I do half changes once midweek and then a full 100% change every weekend, when I also scrub the substrate and now it will be the pebbles and plant and rocks. He's young, not even a year old, and I've only had him since January, so any help would be appreciated please :) thanks!