That looks like quite a mess on the shelly side ....
Perhaps you should look for different kind of bottom dwellers. I’ve got Xeno singularis ndole. To be honest mine nasuta’s also looks very mean, but are quite friendly to everybody (although sometimes some small intimidation takes place). But I’ve got quite a “nasty habit” population:
N. leleupi longior (1/1 and small ones)
N. beuscheri “kamakonde” (1/1 and small ones)
A. calvus “black” (1/1)
And to top it all: Cyprichromis jumbo kituma. (5/7, no small ones at the moment), one male is the dominant fish in the sea!
All have had eggs (except the nasuta’s and the calvus (bought them quite small).
My nasuta (male) is (appr.) 13 cm, female a little smaller. (But all are WF. ). And considering the ndole WF are a bit larger. The WF ndole are 10 cm and the Fx?? are 1,5 cm smaller.
First I bought 5 and lady fortune took care to make them all female… But I must say they intimidated more at that time. Now that there is a male this intimidation has worn down.
The first time when someone looked at the 5 they also thought I had 5 males. But in time I got convinced they are all female, so I bought a sure male (as a long shot). And I think I was right.
Hope you succeed also!!