Nannostomus marginatus Fish Profile: Genus Nannostomus Species marginatus Common name Zwerg-Ziersalmler Origin Amazonien Tank Size min. 30 - 40 cm Temperature 22 - 25 °C pH Value 5.0 - 6.0 Fish Size 3-3,5 cm Food Omnivore Care Sociable, Schooling fish, Diurnal