Hi iamntbatman and thank you for your point of view !
I had to determine a very specific biotope belonging to the Congo River. That was the deal. And the onlly biotope I found on the net was the Bleher's one.
He make a precision of the situation wich is important and can significate that this biotope isn't the same as the whole Pool Malebo wich is very very hard stream.
""This habitat represents a cross-section from a small bay of the Malebo Pool. Between the stones (the Congo River is full of them) and above the sandy bottom there is a fascinating selection of fishes to be discovered, but water plants are virtually absent.""
The microctenopoma effectivly seems to be quite rare. But who knows... The problem is mostly that it seems to need a bigger space. I try to collect other informations about it. The strange point is that all the people who have one or more in a tank say that it doesn't spend is time on the upper part but at the contrary near the bottom space.
The
Pantodon buchholzi, as you suggest, is very interesting. I saw it clearly but I found it a pity to close it whereas it could nearly fly to hunt. But I keep it in my mind cause it appears very interesting...
I also firstly thought about having Phenacogrammus Interruptus but most part of the people I read think that 150L is too small to let them express themselves naturally... Some Parailia Congica or pareutropius Debauwi would be more quiet... And then more adaptated to the tank size.
For the bottom, Nanochromis Parilus sounded right to me... But Have to see, and I think it's not so easy to have some, neither. Maybe I'll change my ground, to put small sand, not to injure fishes.
To conclude I would also say that someone who seems to be really informed about the Congo River, by havind lived there a long time, said to me that this Bleher's biotope where more for those who like aquarium than to try to reproduce this tipical Pool Malebo Biotope.... He talked about a majority of fish wich silver color, and no plant at all in the water, exepted during floods.
Thanks again for all your advices...