Moderate amount of plants and at least 2 caves, preferably 1 on either side (or at least 1 obvious hiding spot per side). Try not to make it symmetrical though, as when the dominant ram claims one side, it might get confused by the similarity and think it owns both sides by mistake (no idea about this tbh but may as well avoid it if you can). Other than that, not much needs to be done.
Both terracotta pots and rocks are fine, the fish don't have a preference. Just make sure the rocks are inert.