I think the issue will be exactly the parameters you are looking for. A lot of the personable cichlids are that way because they are aggressive. They are not afraid of you. And also larger cichlids are not usually good with plants. An Oscar may leave the ancistrus alone I have had them together in the past.
That said the foot print of the tank allows for a good amount of larger wet pets. Oscars were the first thoughts I had. Or a flowerhorn I dislike the way they look but some of the best wet petting I've seen in videos. Most large cichlids will move stuff in the tank dig holes and generally do whatever they want when they get bored.
That said the foot print of the tank allows for a good amount of larger wet pets. Oscars were the first thoughts I had. Or a flowerhorn I dislike the way they look but some of the best wet petting I've seen in videos. Most large cichlids will move stuff in the tank dig holes and generally do whatever they want when they get bored.