They are commonly referred to as pygmy angelfishes, due to their generally much smaller size than other angelfish genera. The species are variably distributed in tropical and subtropical seas of the world. Few have large geographical distributions and some are endemic to tiny oceanic outposts, an island , or small island group. They occur on algal-rocky and coral reefs, and most species live in shallow waters at depths to about 15m, but some range to 70m or more, and a few inhabit only depths of more than 50m. Pygmy angelfishes are quick-darting and often shy species that hug the substrates with tunnels and crevices, ready to disappear and appear again several metres away.
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Place of origin:Central Pacific
Known only from the Hawaiian Islands and Midway Atoll. Found on coral rubble and lagoons at depths between 10-85m. This species is brownish anteriorly and somewhat dusky on two thirds of body posteriorly. Some individuals are brown anteriorly and deeper blue posteriorly. Also it has a dark spot larger than the eye above pectoral fin base. Fins can be yellowish. A small species, length to 6cm.