Beautiful tank
I usually don't like to make suggestions about species, but....
If your water is neutral or slightly higher in pH these are some other small Afrians often overlooked and you might want to consider.
To me the genus Teleogramma with the species brichardi, or depressum are interesting.
Both are rheophillic and might do best with some extra current, which isn't a bad thing for african ferns.
The two above have been on my wish list for years.
Or ........the cichlids of Lake Barumbi mbo, of which I have kept a number
The genus Stomatepia with species S pindu, mariae, and mongo are active little predators that top out after a few years at @ 6-7"
In the photo below S pindu is above, and another Barumbi Mbu lake denizen is Sarotherodon linnellii.
![](/forums/proxy.php?image=https%3A%2F%2Fi70.photobucket.com%2Falbums%2Fi97%2Fdstuer%2FBarumbi%2520mbo%2FIMG_7781_zps91d6c181.jpg&hash=4323ebe582eff5f8f253bc90fbeb53b8)
The iridescent spots on the pindu face, are cephalic pits used to detect prey buried in sand and under leaf litter.
They did well with plants for me in a tank I dedicated to fish only from that lake.
![](/forums/proxy.php?image=https%3A%2F%2Fi70.photobucket.com%2Falbums%2Fi97%2Fdstuer%2FBarumbi%2520mbo%2F053_zps89ee75ab.jpg&hash=590713830edccea0406481d0b5d3c002)
A couple others from the lake are
S mariae (upper)and Konia eisentraudti (lower in the shot below
![](/forums/proxy.php?image=https%3A%2F%2Fi70.photobucket.com%2Falbums%2Fi97%2Fdstuer%2FBarumbi%2520mbo%2F047.jpg&hash=d4aabd5c684554469e9427f8f6958216)
There is also a species from the lake that eats primarily freshwater sponges in nature, called Pungu macleranie (but takes well to aquarium pellets), and another species sometimes available called Myaka myaka.