Johnston Atoll
Johnston
Atoll is a territory of the United
States of America and is protected as a national wildlife
refuge (fws.gov).
It is part of the Central Polynesian Tropical Moist Forests
ecoregion (EoE).
Reviews of the natural history of the atoll are at (Cambridge
pdf), (Bishop
Museum WM pdf), and (Smithsonian).
Nahacky’s Angelfish Centropyge
nahackyi (FishBase)
(ResearchGate)
is a coral reef fish that breeds exclusively at Johnston
Atoll.
Invertebrates known only from Johnston Atoll include a ghost shrimp Paraxiopsis johnstoni (p. 19 of AToL Decapoda pdf), the ostracods Parasterope pacifica and Bruuniella beta (both at Pacific Science WM pdf), the starfishes Hippasteria capstonei (GBIF) (PLAZI) and Evoplosoma nuku (GBIF) (PLAZI), and the molluscs Reticunassa tanager (GBIF) and Roxania argoblysis (p. 12 of Tohuku Univ. pdf).
A parasitic red algae Neotenophycus ichthyosteus (ResearchGate) is also known only from Johnston Atoll.