Unfortunately, I bought the tank specifically to own a betta.
I actually started up a Fluval Edge 23L for a betta, and was recommended shrimp as tankmate. But days before I added the betta I was further advised shrimp are not good tank mates for the betta.
I also couldn't get past the gap at the top of the tank, so I bought this little Marina 360 as a hassle free betta only tank. Now it sounds like I've bought an oversized paper weight!
Gunna look into it a bit more, I guess I could always sell the tank and but another