So, I have three bettas. They are all in different tanks, with different fish. My female is in the 20 gallon with 6 platy fry and 4 balloon mollies (soon). I noticed she liked to burrow herself under the clam shells I have, and lay there, until she came out for food or to wander. I do have other hiding spots for her - and because she decided she prefered the clam shell, I supported it up with rocks, and dug it out more for her so she would not cut herself on it.
Unfortunately I was a bit late, as she did get herself on her side. Now, the first betta I owned did the same thing with a plant, and he healed on his own. This was...5 years ago. I have never had this problem until now.
Is there anything I should be watching out for? I did not realize she was a digger -.- None of my bettas ever did that lol.