|Latin name||Chaetodontoplus melanosoma - (Bleeker, 1853)|
|Common name||Black-velvet angelfish|
|Family||Pomacanthidae - Chaetodontoplus|
|Origin||East Indian Ocean, Australia, Japan, Indonesia|
|Max length||20.0 cm (7.9")|
As aquarium fish
High water quality
This species demands a high water quality.
Amongst other things it means, that water must be properly oxygenated.
Subsceptible to ich
This species is easily susceptible to Marine Ich (Cryptocaryon irritants), when stressed by other fish, bad water quality, or when relocated.
This species likes to eat tubeworms.
Can nibble at clams
This species sometimes nibbles at clams including Tridacna species.
This fish requires feeding several times a day, especially when newly added.
When the fish can find its natural food in the aquarium it requires less frequent feeding.
Sensitive during transportation
This species is very sensitive during transportation and acclimatizing into the aquarium.
Well established aquarium with algae
These fish should be kept in a well run aquarium where they can "graze" algae from rocks and stones.
If there are insufficient algae on the rocks, it is important to feed more frequently and supplement with algae rich food e.g. Spirulina.
Acclimitises best as a juvenile
This species will better acclimatize to the aquarium`s condition if introduced, when young.
Very small individuals can be very delicate.
Requires a varied diet
This species must be fed with an appropriately varied diet.
Requires plenty of space for swimming.
This species revels in swimming and requires an aquarium with ample space.
This species requires places to hide, especially when newly introduced into the aquarium.
This species can change gender from female to male.
When a male is needed, a female changes sex and takes on the role.
This species is very shy and docile, so one should be careful when keeping it with more aggressive fish.
Refuses to eat at first
This species can refuse to eat when newly introduced.
Normally however, they begin to eat within about a week, but it's advantageous if they can find their own food in the aquarium.
Tips for keeping Angelfish
It is possible to keep various different sizes of Angelfish in the same aquarium, but it means that one must choose species with care and that the conditions in the tank are optimum.
Here are some suggestions to increase the chances of success:
Choice of species
It is important not to choose species that are too similar, the greater the variance, the larger the chance of success. It is also advantageous to choose fish of different sizes. Two young Angelfish of the same same size and pattern for example are a bad idea. One should of course avoid the most aggressive species.
Order of introduction
It is a good idea to make a wishlist and choosing the order so, that the least aggressive are introduced first. When adding similar sized Ange fish it works best if they are introduced simultaneously.
There should be enough space in the aquarium, but it is difficult to give specific advice. Of course there are exceptions to the table below as to just how big a tank should be in order to stand a good chance of success. Space itself is not enough, there should also be sufficient hiding places so the fish do not have to fight over these.
100 gal (400 liters): Several small Angelfish (<15cm) can live together.
240 gal (900 liters): Several medium Angelfish (< 20cm) can live together.
400 gal (1500 liters): Several large Angelfish (<25cm) can live together.
Food and water quality
It is always helpful to give the fish a varied diet, so they can withstand the occasional stress situation when for example new fish are introduced. Water quality must also be very high, so that the fish do not get stressed for that reason either.
Corals suitable for an aquarium with Angelfish
It can be a challenge to keep corals together with Angelfish, since the latter eat most soft corals and LPS. Especially Zoathus are swiftly eaten by the larger species.
It is however possible to build up a mixed coral aquarium with Angelfish. If some of the following corals are choosen there is a good chance the Angelfish will leave them alone; Hammer corals, Bubble corals, Star polyps, Disc anemones and others.
Most of the SPS corals can be kept with Angelfish.
One can experience problems getting this fish to feed. Filling living rock with sponges or live food (Artemia for example) or having algae on the rock can help getting them eating in captivity.
Genus description (Chaetodontoplus)
Fish in the Chaetodontoplus genus attain a length of 35 cm and are reasonably well suited to aquarium life. Most of the species should have algae as part of their diet, i.e. nori seaweed, spirulina or spinach, but it needs a varied diet, also containing some frozen foods.
It is generally less aggressive than the Holacanthus and Pomacanthus species.
One should only keep several of these fish when the aquarium is very large.
They are not generally reef safe, as in many cases these fish will disturb LPS, tubeworms etc.
Family description (Pomacanthidae)
Angelfish (Pomacanthidae) are known as some of the most colourful and impressive fish on the reef.
Many species are not reef safe, as they especially target the soft corals and LPS. But by choosing your corals carefully, or by getting specific species of Angelfish, they can be kept in coral aquariums.
There are Angelfish suitable for most aquarium sizes, from Dwarf Angelfish which are well suited to smaller aquaria, to the larger of the species which can be impressively displayed in a larger aquarium.
The demands of the individual species can vary widely. Some are food specialists and require therefore special food, while for others can be difficult to acclimatize, as they live in deep water in the wild. It is recommended that one has a reasonably good knowledge of the different types of food and of treatments of illnesses, if one wishes to keep the larger species.
|Distribution||Indo-West Pacific: Indo-Malayan region and New Guinea , northward to southern Japan.|
|English common names||Black velvet angelfish, Black-velvet angelfish|
|Danish common names||Fløjlskejserfisk|
References and further reading
Niels K. 2014. Private conversation - saltvandsforum.dk - (Danish)
Scott W. Michael. 2004. Angelfishes and Butterflyfishes (Reef Fishes Series Book 3) - TFH Publications / Microcosm Ltd. - (English)
Bob Fenner. Marine Angelfishes, Family Pomacanthidae - Wet Web Media - (English)
Bob Fenner. The Best Angelfishes For Marine Aquarium Use - Wet Web Media - (English)
Bob Fenner. The Ultimate Angelfish Aquarium; An amazing and challenging collection of marine angelfishes - Wet Web Media - (English)
Collection of links to additional information - Wet Web Media - (English)
Reef Central. 2009. Keeping more than one emperor angelfish together - (English)
Froese, R. and D. Pauly. Editors. 2014. FishBase. World Wide Web electronic publication. www.fishbase.org, version (08/2014).
|hermaphroditic, docile shy, herbivore, algae eater, eats feather duster worm, eats tridacna, angel, tag_kejser|