Hi, people, I need advise.

I've an 8 ft tank which I plan to keep a fish that does not allow people to put their hands into the tank. It's an aba aba knifefish. As the tank is going to be a divider in my parents' house, they want it to look presentable, meaning it needs to have some greens in it.

My experience in keeping aquarium plants = 0

My fish likes to play around with the substrate, moving the sand around making dunes in its tank. If there are small pieces of stone, it will try to "throw" it out of the tank. Hence, only heavy, flat pieces of stone are placed in its tank.

I'm not planning to have a CO2 system or any fancy planted tank equipment. The lighting used will be natural light or basic LED.

I need advise on plants that are very, very low maintenance:

1. not planted into substrate
2. low lighting
3. low CO2
4. slow growing (So I don't need to trim it often)
5. Hardy

So far I've been told to try java ferns, java moss and anuibus.
Are there any others?

And does moss clog up the filtration system easily? It's a sump type filtration. If not, I plan to make a moss wall.

Thank you.