Gymnogeophagus Terapurpua come from areas that go through a cold season. To induce breeding, brief drops in temperature during parts of the year will be beneficial. A sandy substrate is required as they gather food morsels by sifting sand through their gills. Scientific Name: Gymnogeophagus Terapurua Common Name: Max Size: 7" pH: 5.0-8.0 Hardness: Soft Temperature: 70-76° Aggressiveness: Peaceful Region of Origin: South America Captive Bred or Wild: Captive Bred Diet: Flake or pellet, frozen and live food Compatibility: Large tetras, peaceful South American cichlids, catfish.