Nannostomus unifasciatus Fish Profile: Genus Nannostomus Species unifasciatus Common name Peacock pencilfish Wild Origin Amazonia Tank Size min. 30 - 40 cm Temperature 24 - 29 °C pH Value 5.0 - 6.0 Fish Size 4-5 cm Food Omnivore Care Sociable, Schooling fish, Diurnal