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Blue damselfish, photographed on a transparent background

ReefIn the market90 coinsCommon

Blue damselfish

Chrysiptera cyanea

A brilliant blue troublemaker that chases even bigger fish.

The Blue damselfish (Chrysiptera cyanea) is a tropical marine fish of the family Pomacentridae. It lives on and around reefs, between 0 and 10 m deep. Adults grow to about 7 cm; the largest on record measured 8.5 cm (total length). In the aquarium it needs a tank at least 75 cm long and water at 23–27 °C.

Size
7 cm
Smallest tank
75 cm
Temperature
23–27 °C
Care
Easy

In the aquarium

Temperature23–27 °C
pH7.8–8.5
Temperament
Aggressive
Diet
Omnivore
Activity
Busy
Water layer
Mid water
Group
Lives on its own
Coral
Reef safe
Drawn to scale in a 75 cm tank

These values are compiled from real species data, and the LumaReef simulation is built to keep them true to life.

Which tank it fits

  • Nano60 cm · 65 litresToo small
  • Standard90 cm · 180 litres20 of them
  • Wide120 cm · 300 litres33 of them
  • Living room180 cm · 650 litres72 of them
  • Showcase250 cm · 1,200 litres133 of them
  • Gallery300 cm · 1,440 litres160 of them

Who it lives with

In the wild

Water type
Marine
Climate zone
Tropical
Habitat
Coral and rocky reefs
Largest on record
8.5 cmtotal length
Aquarium trade
Traded commercially

Depth

Conservation status

Classification

  1. OrderBlenniiformes
  2. FamilyPomacentridae
  3. GenusChrysiptera
  4. SpeciesChrysiptera cyanea
  5. Described byQuoy & Gaimard, 1825

In other languages

English
Blue Demoiselle
German
Blauer Korallenfisch
Spanish
Damisela zafiro
Italian
Damigella zaffiro
Russian
Синяя хризиптера
Japanese
ルリスズメダイ
Chinese
藍刻齒雀鯛

Quick answers

Blue damselfish size: how big does it get?
Adults reach about 7 cm. The largest on record measured 8.5 cm (total length). Record sizes among the 13 Chrysiptera species on LumaReef: 4.9 cm (Greyback Damselfish) to 12.5 cm (Twospot Demoiselle).
Blue damselfish tank size: what is the minimum?
A tank at least 75 cm long. In LumaReef that is the Standard tank or larger.
Blue damselfish water parameters: what does it need?
Temperature 23–27 °C, pH 7.8–8.5. Close to what most Chrysiptera on LumaReef need (23–27 °C).
Blue damselfish tank mates: what can it live with?
It gets along with 38 of the 99 reef species in the catalogue, such as Percula clownfish, Cherub angelfish, and Falco hawkfish.
Blue damselfish: alone or in a group?
It can be kept on its own.
Blue damselfish and corals: is it reef safe?
Yes, it leaves corals alone.
Blue damselfish depth: how deep does it live?
In the wild, 0 to 10 m down. Shallower than most Chrysiptera on LumaReef (1–18 m).

All Pomacentridae speciesAll species A–Z

Sources

Blue damselfish: compiled from these references.