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Gymnocorymbus ternetzi
 (Boulenger, 1895)
  Family: Characidae (South- & Central American Characins) / Order: Characiformes (Characins)
  
  Common names Distribution Environment Fish  
  UK: Black Tetra, Black Widow Tetra, Black Skirt Tetra
DK: Sort Tetra		 South America:
Rivers Paraguay & Guaporé basins to Argentina 		Freshwater
20-26ºC / pH 6-8		 Max Size: 7½ cm