title: Plectroglyphidodon johnstonianus
text: # Plectroglyphidodon johnstonianus
  
  Plectroglyphidodon johnstonianus, commonly known as the Johnstone Island damselfish, is a species of damselfish from the Indo-Pacific. It occasionally makes its way into the aquarium trade. It grows to a size of 14 cm in length.
  
  