Tropical Fish Keeping - Aquarium fish care and resources

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TFK Team 05-16-2013 10:43 AM

Diadem Dottyback (Pseudochromis Diadem)
Diadem Dottyback

Scientific Name: Pseudochromis Diadem
Family: Pseudochromidae

About the Diadem Dottyback

Species Type: Saltwater Fish
Category: Basslets & Dottybacks

Care Level: Easy. Ships well and acclimates well to the home aquarium. Accepts dried foods eagerly and quickly after acclimation. Is resistant to disease. An overall good choice for the new saltwater hobbyist.
Origin: Western Pacific
Compatibility/Temperament: The Diadem or Purple Stripe Dottyback is a territorial species which should be kept alone in a small aquarium, or with a mixed community in a larger sized tank. This species can be as aggressive as many Damselfish, so care must be taken when attempting to add other small fish into the same aquarium. Beware of mixing Dottybacks in the aquarium with small sized shrimp, as they will make for a quick snack!


With a bright yellow body and a purple-violet stripe running from its forehead down its back, the Purple Stripe Dottyback is a very attractive fish. Healthy specimens will have a very distinct purple strip, so avoid purchasing individuals with faded color. The Diadem Dottyback can be housed in multiple groups if kept in a large reef aquarium with multiple hiding spots.

In the aquarium the Diadem Dottyback will generally make home in the reef structure, but are not a shy fish. They spend their time feeding on small microfauna and are very eager to accept other food preparations provided by the fishkeeper. This species is very hardy and resistant to disease, and therefor makes a great beginner fish in a species tank.

Diadem Dottyback Diet

Meaty foods including invertebrates, small marine fish and shrimp. Will accept frozen foods.


This Dottyback grows to about 2'' in length.

Minimum Tank Suggestion

20 gallons

Ideal water parameters for Diadem Dottyback

Marine fish are highly sensitive animals with very specific care requirements. Most all saltwater species will require similar water conditions, designed to replicate that of natural seawater. Ammonia and nitrite levels should absolute zero, temperature at 76F to 80F, and salinity at 1.024 to 1.026. Although some fish are tolerant of lower levels of Nitrate, the goal in every aquariums should be to keep Nitrate as close to zero as possible, and certainly under 20ppm. Finally, maintaining a stable pH of 8.0 to 8.4 is desired. Achieving this is made easier by monitoring alkalinity, which should be kept at 8-12 DKH, and calcium, which is targeted at 400 to 460ppm.

Contributing Members

The following members have contributed to this profile: Pasfur

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