Chaetodontoplus mesoleucus

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Facts
Latin name Chaetodontoplus mesoleucus - (Bloch, 1787)
Local name Vermiculated angelfish
Family Pomacanthidae - Chaetodontoplus
Origin East Indian Ocean, Indonesia
Max length 18 cm (7,1")
As aquarium fish
Minimum volume 600 cm (158 gal)
Hardiness Delicate
Suitable for aquarium Suitable with care
Reef safe Not reef safe
Aggressiveness Docile but might be aggressive towards similar species
Feed
Recommended Microalgea (Eg. spirulina)
Macroalgea (Eg. seaweed / nori)
Small crustaceans (Krill, mysis, artemia...)
Larger crustaceans (Shrimp, crabs...)
Maybee Zooplankton (Cyclops, pods...)
Other invertebrates
Soft coral
Large polyp stone coral (LPS)
Sponges
Beware of
Eats tubeworms

This species likes to eat tubeworms.

Can nibble at clams

This species sometimes nibbles at clams including Tridacna species.

Some individuals can present problems

Some individuals of this species can find it hard to acclimatize, but others are problem free.

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.

Keep in mind
Requires a varied diet

This species must be fed with an appropriately varied diet.

Sensitive during transportation

This species is very sensitive during transportation and acclimatizing into the aquarium.

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.

Frequent feeding

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. 

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. 

Requires plenty of space for swimming.

This species revels in swimming and requires an aquarium with ample space.

Hiding places

This species requires places to hide, especially when newly introduced into the aquarium.

Docile

This species is very shy and docile, so one should be careful when keeping it with more aggressive fish.

Hermaphroditic

This species can change gender from female to male.

When a male is needed, a female changes sex and takes on the role.

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.

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.

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.

Space
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.

Descriptions and further reading
Description

In some cases this fish can be tempted into eating by using fresh Caulerpa algae.

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.

FishBase
Aquarium trade Yes
Distribution Indo-West Pacific: Japan to Indonesia, Sri Lanka and east to Papua New Guinea (Ref. 4859). Reported from Mentawai Islands (Ref. 27157). May consist of two separate species, one with an all-yellow tail and the other mostly gray tail (Ref. 48391).
English common names Vermiculated angelfish
Verniculate angelfish
Danish common names Hvidstrålet kejserfisk
French common names Poisson-ange vermiculé
References and further reading

About references

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)