I believe This article may help the hobbyist with a wanted list that includes this very interesting, beautiful and small fish. Despite all this its requirements are very strict and they are not usually found in pet stores on a regular basis.
Keeping Dicrossus filamentosus in the home
The dicrossus filamentosus is a very sensitive fish from the waters of the rio negro. At certain times of the year they can be collected, and often sold in local shops where the survival rate is extremely poor. i have personally seen hundreds of dead specimens at shops and can testify to their extreme sensitivity.
Keeping this south american cichlid is best done in a twenty gallon long as i have personnally seen a 3 inch male. This fish is rather non aggressive and does well with other fish that are not too boisterous.