Chromis abyssus

Chromis abyssus is a species of damselfish first discovered in 1997 and described in 2008. The long fish only lives more than below the surface of the Pacific Ocean around the coast of the Ngemelis Islands, Palau. Adults have been observed living singly or in pairs, whereas juveniles tend to live in groups.
Etymology.
Its specific name, "abyssus", is a Latinised form of the Greek noun "" (meaning "abyss"), in honour of the documentary film "Pacific Abyss", produced by the British Broadcasting Corporation, which funded the expedition on which the type specimens were collected. The vernacular name "deep blue "Chromis"", a reference to both the life colour of this species and the relatively (within the context of the genus) deep-dwelling habits, is suggested instead of the more literally translated "abyss "Chromis"", so as not to imply that the species inhabits depths commonly defined as abyssal.
ZooBank.
"C. abyssus" was the first species entered into the ZooBank registry with a timestamp of 2008-01-01T00:00:02, and it was selected as one of "The Top 10 New Species" described in 2008 by The International Institute for Species Exploration at Arizona State University and an international committee of taxonomists.