
Moorish idol
Zanclus cornutus
Zanclidae

Zanclus cornutus
Zanclidae
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Lives wild in American Samoa, Australia, China, Christmas Island, Cocos (Keeling) Islands, Colombia, Cook Islands, Costa Rica, and 49 more countries.
Adults inhabit turbid inner lagoons, reef flats, and clear seaward rocky and coral reefs. Benthopelagic. Generally encountered in small groups of 2 or 3 individuals. Adults occur singly, in pairs and occasionally are seen in large schools. They feed on small encrusting animals. Size of metamorphosis from postlarva to juvenile is 7.5 cm. The long pelagic larval stage is the reason for the wide distribution and strong colouration that shows no geographical variation. Popular aquarium fish but rarely survives in tanks. Minimum depth reported taken from Ref. 128797.
From the store to the tank: how to get the fish used to your water, why you should add only a few at a time, and what to watch for in the first few days.
Why new fish should live in a tank of their own for a few weeks before they move in, what you need, and what to look for.
What is different in a saltwater aquarium: salt, refractometer, live rock and corals. An introduction for anyone thinking of giving it a try.