Hemigrammus is a genus of freshwater fish in the family Characidae native to South America (including Trinidad) and commonly seen in the aquarium trade. These are medium-small tetras where the largest species reach up to around . Species There are currently 59 recognized species in this genus: Hemigrammus aereus Géry, 1959 Hemigrammus aguaruna F. C. T. Lima, Corrêa & Ota, 2016 Hemigrammus analis Durbin, 1909 Hemigrammus arua F. C. T. Lima, Wosiacki & C. S. Ramos, 2009 Hemigrammus ataktos Marinho, D'Agosta & Birindelli, 2014 Hemigrammus barrigonae C. H. Eigenmann & Henn, 1914 Hemigrammus bellottii (Steindachner, 1882) Hemigrammus bleheri Géry & Mahnert, 1986 (Fire-head tetra) Hemigrammus boesemani Géry, 1959 Hemigrammus brevis Durbin, 1911 Hemigrammus coeruleus Durbin, 1908 Hemigrammus cupreus Durbin, 1918 Hemigrammus cylindricus Durbin, 1909 Hemigrammus diagonicus Mendonça & Wosiacki, 2011 Hemigrammus durbinae Ota, F. C. T. Lima & Pavanelli, 2015 Hemigrammus elegans (Steindachner, 1882) Hemigrammus erythrozonus Durbin, 1909 (Glowlight tetra) Hemigrammus falsus Meinken, 1958 Hemigrammus filamentosus Zarske, 2011 Hemigrammus geisleri Zarske & Géry, 2007 Hemigrammus gracilis (Lütken, 1875) Hemigrammus guyanensis Géry, 1959 Hemigrammus haraldi Géry, 1961 Hemigrammus hyanuary Durbin, 1918 (Costello tetra) Hemigrammus iota Durbin, 1909 Hemigrammus levis Durbin, 1908 Hemigrammus luelingi Géry, 1964 Hemigrammus lunatus Durbin, 1918 Hemigrammus machadoi Ota, F. C. T. Lima & Pavanelli, 2014 Hemigrammus mahnerti Uj & Géry, 1989 Hemigrammus marginatus Durbin, 1911 Hemigrammus matei C. H. Eigenmann, 1918 Hemigrammus megaceps Fowler, 1945 Hemigrammus melanochrous Fowler, 1913 Hemigrammus micropterus Meek, 1907 Hemigrammus microstomus Durbin, 1918 Hemigrammus mimus J. E. Böhlke, 1955 Hemigrammus neptunus Zarske & Géry, 2002 Hemigrammus newboldi (Fernández-Yépez, 1949) Hemigrammus ocellifer (Steindachner, 1882) Hemigrammus ora Zarske, Le Bail & Géry, 2006 Hemigrammus orthus Durbin, 1909 Hemigrammus parana Marinho, F. R. de Carvalho, Langeani & Tatsumi, 2008 Hemigrammus pretoensis Géry, 1965 Hemigrammus pulcher Ladiges, 1938 (Garnet tetra) Hemigrammus rhodostomus C. G. E. Ahl, 1924 (Rummy-nose tetra) Hemigrammus rodwayi Durbin, 1909 (Gold tetra) Hemigrammus rubrostriatus Zarske, 2015 Hemigrammus schmardae (Steindachner, 1882) Hemigrammus silimoni Britski & F. C. T. Lima, 2008 Hemigrammus skolioplatus Bertaco & T. P. Carvalho, 2005 Hemigrammus stictus (Durbin, 1909) Hemigrammus taphorni Benine & G. A. M. Lopes, 2007 Hemigrammus tocantinsi F. R. de Carvalho, Bertaco & Jerep, 2010 Hemigrammus tridens C. H. Eigenmann, 1907 Hemigrammus ulreyi (Boulenger, 1895) Hemigrammus unilineatus (T. N. Gill, 1858) (Feather-fin tetra) Hemigrammus vorderwinkleri Géry, 1963 Hemigrammus yinyang F. C. T. Lima & L. M. Sousa, 2009 References Characidae Freshwater fish genera Characiformes genera Taxa named by Theodore