The way I like to house cichlids, is to "not" put those of the same genus together.
If it were me, and I wanted to be geographically correct I'd find Parachromis endemicto the same area with Vieja
Or endemic Thorichthys with Vieja
if I wasn't trying to be geographically correct,
Creincichla with Vieja
or Geophagus with Vieja
I always try to put fish with a different body shapes and/or colors together, seems for me, to lessen aggression, and also any chance of hybridization.
like these un-geographically correct, and un-similar species
some species it doesn't seem to matter, and must be kept alone.
If it were me, and I wanted to be geographically correct I'd find Parachromis endemicto the same area with Vieja
Or endemic Thorichthys with Vieja
if I wasn't trying to be geographically correct,
Creincichla with Vieja
or Geophagus with Vieja
I always try to put fish with a different body shapes and/or colors together, seems for me, to lessen aggression, and also any chance of hybridization.
like these un-geographically correct, and un-similar species
some species it doesn't seem to matter, and must be kept alone.