Griz
Fish Herder
I think a pair of apistogramma borelli might be OK in a 60cm tank, either by themselves or with 2-3 pencilfish as dithers but nothing else.
If you're thinking shell dwellers, a pair of Neolamprologus multifasciatus should work for you for quite some time. It will be many months before you need to worry about removing juveniles. This would have to be a species tank.
If you're thinking shell dwellers, a pair of Neolamprologus multifasciatus should work for you for quite some time. It will be many months before you need to worry about removing juveniles. This would have to be a species tank.