At the extreme eastern tip of its range, Acanthurus leucosternon meets with another closely related species: Acanthurus nigricans, the White Cheek, Whitecheeked, or Goldrim Surgeonfish. In this part of its range, the White Cheek Tang is quite common. The solitary Acanthurus leucosternon (Powder Blue Tang) seems to often have no other option than to breed with or join in spawning with Acanthurus nirgricans (White Cheek Surgeonfish). This leads to quite a lot of hybrid between the two species in that particular area.
Kāʻanapali Magazine Spring/Summer 2018 by Maui Nō Ka 'Oi Magazine - Issuu
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