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Nannostomus mortenthaleri
Coral Red Pencilfish
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Coral Red Pencilfish (Nannostomus mortenthaleri), commonly called Red arc pencil fish or Peruvian red pencil fish, belongs to the superfamily Lebiasinidea. This freshwater fish requires a pH of 5.0 to 7.0 and a temperature of 74 degrees to 82 degrees Fahrenheit. It can be fed brine shrimp, daphnia, or high-quality pellets.