External drive keeps getting mounted under /media/ even though I have it in fstab under /mnt

I have 3 physical external USB drives. All are btrfs. Two are combined into a single volume, the other is not. The two volumes are both in /etc/fstab to be mounted at /mnt and that works fine, but the combined one also keeps getting automatically mounted in /media, like a removable USB flash drive, and I don't know how to turn this off.

/etc/fstab:

# / was on /dev/sda6 during installationUUID=619c1750-218e-4432-bb13-732a9c9192b5 /               ext4    errors=remount-ro 0       1# /boot/efi was on /dev/sda1 during installationUUID=3449-605A  /boot/efi       vfat    umask=0077      0       1/swapfile                                 none            swap    sw              0       0UUID=31abab38-ca1f-4541-9141-9506098d832a /mnt/butter auto nosuid,nodev,nofail,x-gvfs-show 0 0UUID=3f8633ef-aad6-4444-87b6-831a11c3067e /mnt/Int_Butter auto nosuid,nodev,nofail,x-gvfs-show 0 0UUID=2679ca57-e8e3-4b23-8574-69d751d62dbc /mnt/Risky auto nosuid,nodev,nofail,x-gvfs-show 0 0

All 3 are mounting to /mnt/ as they should, but butter is also being mounted to /media/ as if it were a USB thumb drive.