Size : Up to 4-5 cmpH : 5 – 7.5Temperature : 21°C – 28°CLifespan : 5 – 6yearsOrigin / Habitat : South AmericaTemperament / Behavior : Tetras are peaceful tropical fish and best kept in schools of 6 or more.The origin of the Black Phantom Tetra can be traced back to South America, specifically in Brazil (in the river basins of Río Beni and Río Mamore at the Bolivian and Brazilian border) and in Bolivia (Río Guaporé). It’s also possible that the fish can be found in Río Paraguay’s upper region, just before Paraguay. This species has a fairly large distribution with no known threats to their existence, making them ideal pets. They are easily available and are generally inexpensive.Avid aquarists should know that this particular class is benthopelagic, meaning they require tropical temperatures in order to thrive. Since its original dwelling consists of dense vegetation, pet owners should understand that this tetra is more likely to grow well in a planted aquatic environment while in captivity.