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Flameback Angel (Centropyge acanthops)

Flameback Angel

Centropyge acanthops
Family
Angel
Care level
Intermediate
Temperament
Semi-aggressive
Reef safe
Reef safe with caution
Max size
8 cm
Min tank
200 L · 53 gal
Origin
Western Indian Ocean (East Africa)
Diet
Omnivore
Food
Nori, Marine pellets, Mysis, Spirulina, Angelfish frozen preps

Overview

The Flameback Angel is one of the smallest and most vividly coloured dwarf angels in the trade, with a deep violet-blue body and a bright orange "flame" patch running from the head down the back. It stays compact, making it one of the more realistic pygmy angels for a moderately sized reef tank rather than a full display tank.

Like most Centropyge, it is a grazer by nature and does best in a system with some established rock and film algae to pick at between feedings. Colour and condition are usually a direct reflection of how well-fed and how mature the tank is when it's introduced.

It's a hardy fish once settled but can be a slow, fussy eater in the first week or two after arrival, so patience during acclimation pays off.

Compatibility

Flameback Angels can be territorial toward other dwarf angels and similarly shaped or coloured fish, especially in smaller volumes, so they're usually best kept as the only pygmy angel in the tank unless the aquarium is large with plenty of rockwork to break sightlines. They generally leave peaceful community fish, gobies, and wrasses alone.

With corals and clean-up crew they are a mixed bag — most individuals leave stony coral alone but a percentage will pick at large-polyp stony corals, zoanthids, or clam mantles, which is why they're rated "reef safe with caution" rather than fully reef safe.

Health & quarantine

Flamebacks are prone to the same ich and marine velvet susceptibility as other dwarf angels and should always go through a minimum four-week quarantine with observation for the first signs of scratching or laboured breathing. Watch new arrivals closely for the first two weeks — a Flameback that isn't eating within 5–7 days of arrival needs intervention (try live mysis, garlic-soaked frozen food, or nori tabs). Once eating and settled they are quite robust and long-lived.

Frequently asked questions

Is the Flameback Angel reef safe?
Mostly, but not guaranteed. Most individuals leave SPS and soft corals alone, but some will nip at LPS, zoanthids or clam mantles, so it's rated reef safe with caution.
Can I keep two Flameback Angels together?
Only in a large tank (400L+) with heavy rockwork and ideally introduced as an established mated pair. Two unrelated individuals in a small tank will usually fight.
Why won't my new Flameback Angel eat?
This is common in the first few days post-shipping. Try live or frozen mysis, nori sheets, and garlic-soaked pellets, and reduce other tankmates competing for food until it settles.
What size tank does a Flameback Angel need?
200 litres is a realistic minimum given its small adult size, though more rock and swimming space is always better for reducing territorial stress.
Will a Flameback Angel fight with clownfish?
Generally no — aggression is usually directed at other angelfish or similarly shaped/coloured fish, not unrelated species like clownfish.

Care guidance is drawn from our own experience — every fish is an individual, so treat it as a starting point, not a guarantee. Not sure if a species suits your tank? Come ask us in store. New to the terms? Read the care-terms glossary.