Flameback Angelfish

Centropyge acanthops

Saltwater Fish Species Group: Angel Dwarf Family: Pomacanthidae

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Water parameters

Temp 76-80 F Temperature

Maintaining a stable and appropriate temperature is critical for the survival of aquatic life.

pH 7.8 - 8.4 potential of Hydrogen

Measuring the acidity or alkalinity of water on a 0–14 scale, where 7 is neutral, 7 is alkaline.

NO3 1-20 ppm Nitrate

While less toxic than ammonia, high nitrate levels (above 40–80 ppm) are important to monitor because they can cause fish stress, stunted growth, and harmful algae blooms.

NO2 <0.0001 ppm Nitrite

It is a highly toxic, intermediate compound in the nitrogen cycle produced from broken-down ammonia

PO4 0.01 - 0.1 ppm Phosphate

It is essential for plant development but must be managed, as excess levels trigger nuisance algae blooms and inhibit coral calcification.

NH3 <0.1 ppm Ammonia

It is the primary killer of aquarium fish, causing gill damage, stress, and death

Ca 380 - 450 ppm Calcium

Supporting the growth, skeletal structure, and shell formation of corals, mollusks, crustaceans, and coralline algae

KH 8 - 12 dKH Alkalinity

It acts as a shield, neutralizing acids to prevent dangerous pH "crashes" that can harm fish, corals, and plants.

Mg 1200 - 1400 ppm Magnesium

It enables coral growth by supporting skeletal formation, assists in metabolic processes, and ensures that calcium is available for corals, clams, and coralline algae.

SG 1.023 - 1.026 SG Salinity

Essential for maintaining stable, natural water parameters, proper osmoregulation, and stress-free environments for marine fish and corals

ORP 250 - 400 mV Oxidation-Reduction Potential

A higher positive mV indicates clean, oxygen-rich water with high water quality, while low readings indicate high pollution.

About Flameback Angelfish

General information

The Flameback Angelfish has striking contrasts of blue and orange-yellow colors. While the body is predominately blue, there is a broad and bright orange to yellow swatch from the head along the back to the tip of the dorsal fin. The caudal fin is yellow and somewhat transparent, which distinguishes it from the Brazilian Flameback Angelfish. On occasion, this fish may nip at SPS and some species of polyp corals in the reef aquarium.

Diet & nutrition

Flameback angelfish are omnivores feeding mainly on invertebrates and algae. Diet in captivity may include frozen mysis shrimp and Spirulina algae. Angelfish food preparations, pellets, and other frozed food products may be fed to these angels.

Determining sex

Flameback angelfish like other angelfish belonging to the genus Centropyge are protogynous hermaphrodites. This means that a group of flameback angelfish are all born female but may undergo sex change when the need arises, hence the determining factor for an individuals gender is their size. Male Flameback Angelfish are relatively larger than their female counterparts.

Breeding & spawning

Flameback angelfish are observed to spawn at dusk just before sunset in the wild. The male flameback angelfish will soar and hover over a female Flameback, extends his fins, and tilts at a 45-90 degree angle. The female then follows the male at the top of the aquarium. male will stimulate the emission of eggs with biting motions on female's abdomen; eggs will be released for external fertilization and abandoned in open water without any particular parental care.

Captive breeding of this species haCoral Beauty Angelfishes are susceptible to the common reef scourges such as parasites like White Spot Disease (Cryptocaryon irritans) or also known as Crypt, and Velvet Disease (Oodinium occelatum) which is a parasitic skin flagellate.ve been proven difficult.

Diseases

Coral Beauty Angelfishes are susceptible to the common reef scourges such as parasites like White Spot Disease (Cryptocaryon irritans) or also known as Crypt, and Velvet Disease (Oodinium occelatum) which is a parasitic skin flagellate. White spots and dusty golden film lesions on the skin or the eyes of the angelfish are observable when the fish contracts such diseases.

It is also vulnerable to bacterial and fungal diseases as a secondary infection from the parasitic and protozoan diseases. One major bacteria of concern is the Vibrio bacteria. It usually starts as an infection that turns into Dropsy, Popeye, Bleeding or Red Streaks on the skin. It is a very fast acting bacteria that can kill the fish within two days.

Origination

Centropyge acanthops originated in the coasts East of Africa. Its range covers the western Indian Ocean particularly from Oman and Somalia south to East London, and east to Madagascar, Seychelles, Comoros, Mauritius, Reunion and the Mascarene Islands, and in Maldives.

Cautions

Flameback angelfish tends to be territorial against non-sessile invertebrates (shrimp and crabs) and other algae grazing fish of the same size and color, such as Tangs, Rabbitfish, and other Angelfish. They are well suited in reef-tanks, however, caution should be exercised in adding them to tanks with meaty brain corals such as Cynarina spp. and Trachyphyllia spp.

Caution should be done in adding this species into the tank, consider introducing them to the tank and a bigger tank is recommended to avoid the need to becoming aggressive to other tankmates.

Acclimation process

Flameback angelfish fare well in Fish-Only-Live-Rock tanks but they also do well in reef tanks. They should be provided with enough rocks and crevices to provide hiding space since when first introduced to the tank this pygmy angelfish tends to be shy. After a few days of acclimation, these Flameback angelfish becomes more active and will spend most time grazing on the rock and sand in the tank.

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