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IntroductionA striking species of damselfish in the genus Chromis, it was first observed in 1997 by Richard Pyle during a dive to 120 meters (400 feet) in Palau. It was later seen in the same general area by Patrick Colin and Lori Bell from a small submersible, and again from a Remotely Oerated Vehicle (ROV) in Indonesia by Forrest Young. It managed to ellude capture for a full decade, until nine specimens were finally captured in April 2007 at a depths of 107-116 meters (350-380 feet) by researchers using sophisticated closed-circuit rebreather dive gear, who were being filmed as part of a documentary for the BBC. Very little is known about the ecology or behavior of this species, due to its relatively deep-dwelling habits, but it likely feeds on plankton. This species holds a special place in taxonomic history as being the very first species to be registered in ZooBank (the online registry of the International Commission on Zoological Nomenclature), and for being formally described in an article published exactly 250 years after the official start of Zoological Nomenclature.