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:Western Indian Ocean
Indian Ocean, ranging from the Red Sea and east coasts of Africa to the Maldives and to Andaman Sea, just reaching Sumatra. It inhabits rubble bottoms and coral rich areas to a depth of about 30m. Found also in rocky tide pools in South Africa. In the wild this fish looks almost black. It has an overall dark bluish-brown colour with indistinct vertical barring on the body. The only conspicuous markings are a dark ocellus at eye level above the pectoral-fin base and the blue margins on the ventral and anal fins. Some blue reflective bands show up in the median fins when seen from certain angles. Length to 13cm.