Pictichromis diadema

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Facts
Latin name Pictichromis diadema - (Lubbock & Randall, 1978)
Local name Diadem dottyback
Family Pseudochromidae - Pictichromis
Origin Indonesia, Central/West Pacific
Max length 6 cm (2,4")
As aquarium fish
Minimum volume 50 cm (13 gal)
Hardiness Average
Suitable for aquarium Suitable with care
Reef safe Reef safe with caution
Aggressiveness Aggressive towards other species
Feed
Recommended Zooplankton (Cyclops, pods...)
Small crustaceans (Krill, mysis, artemia...)
Mostly Larger crustaceans (Shrimp, crabs...)
Beware of
Jumps out of open aquaria

This species is known to jump out of open aquaria.

Threat towards crustaceans

This species poses a threat towards shrimps and crabs etc., which are relatively small.

Aggressive

This species can be extremely aggressive towards other fish.

Be careful when keeping these fish together with peaceful or docile species. Regular feeding, plenty of hiding places and a lot of space can alleviate aggressive behavior to some degree.

Keep in mind
Requires a varied diet

This species must be fed with an appropriately varied diet.

Looses colour in the aquarium

In the aquarium the colour of this species can become matte.

Food with plenty of pigment and generally a varied diet of high quality can help alleviate colour loss.

Hiding places

This species needs good hiding places, for example, between live rocks.

Hermaphroditic

This species can change gender from female to male.

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

Bred in captivity

This species can be bred in captivity, one can therefore consider asking your local fish store for a captive bred specimen.

Descriptions and further reading
Family description (Pseudochromidae)

Dottybacks (Pseudochromidae) are often very colourful, rather hardy and relatively small, typically under 4 inch (10 cm). These fish can be distinguished from other fish by looking at the shape of the eye, see for example the picture of this: Hawkfish, Surgeonfish, Rabbitfish, Angelfish, Triggerfish, Clown/ Damselfish or Pufferfish.

Dottybacks will compete for food with other fish which eat zooplankton off the rocks. Mandarinfish and similar species can find it difficult to get enough food if kept together with Dottybacks.
One could consider the Gramma species, if one wishes a similar fish which is more peaceful.

FishBase
Aquarium trade Yes
Distribution Western Central Pacific: Peninsular Malaysia, the Philippines and northern Borneo.
English common names Diadem dottyback
References and further reading

About references

Henry C. Schultz. 2002. The Dottybacks - Reefkeeping - (English)
Scott W. Michael. 2001. Basslets, Dottybacks & Hawkfishes: v. 2 (Reef Fishes) - TFH Publications / Microcosm Ltd. - (English)
Bob Fenner. The Dottybacks, Family Pseudochromidae - Wet Web Media - (English)
Collection of links to additional information - Wet Web Media - (English)