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Osteoglossum ferreirai
 Kanazawa, 1966
  Family: Gymnotidae (Nakedback Knifefishes) / Order: Gymnotiformes (Knifefishes)
  
  Common names Distribution Environment Fish  
  UK: Black Arowana (Arawana)
DK: Sort Arowana		 South America:
River Negro basin		 Freshwater
24-30ºC / pH 6½-7½		 Max Size: 90 cm  
  
  
 
(Adult)