The members of the family Pomacanthidae are generally know as angelfishes and, like their nearest cousins, the butterflyfishes, are regarded by many divers and aquarists as being amongst the most beautiful and majestic fishes in the sea. The majority of species occur on shallow reefs in coral, algae and sponge zones, most going little deeper than about 30m but where conditions are pristine and water is very clear, many species go much deeper and few species only live deep (over 100m). Angelfishes feature a large and distinctive backward-protruding spine from the lower corner of the gill-plate (cheek spine) from which the family name was derived. This cheek-spine is diagnostic for all the species , even at juvenile stage, and readily separates any angelfishes from butterflyfishes that may be similar in shape. Mot angelfishes are robust with compressed, ovate to rhomboid shaped bodies, covered with small or tiny scales, and have a continuous dorsal fin. The mouth is small and jaws are set with many small, usually tricuspid teeth that are used for grazing algae or scraping sponges and other sessile invertebrates. Few species combine their diet with a variety of foods and some are planktivores.
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Luogo d'origine:Oceano Indiano occidentale
A hybrid morph known from the Maldives and Seychelles regions of the parent species Apolemichthys trimaculatus and A.xanthurus. It is moderately common in some parts of Maldives and usually seen at depths of about 20-30m. Although it appears to live solitary, it may be pairing or be part of a small group comprising itself, and one of the parent species. Finding a number of hybrid individuals together would be very rare. The hybrid form is identified by its yellowish colour, derived for A.trimaculatus, and the dusky head and black blotch on the soft rayed part of the dorsal fin. Length 20-22cm.