Blue Damselfish

Pomacentrus caeruleus

Family : Pomacentridae

FishMarinedamselfish

Entirely blue damselfish, very common on reefs. Active and hardy, ideal for beginners in marine aquariums.

Blue Damselfish — photo 1 sur 4
Wolf Meusel · Wikimedia Commons · Public domain1 / 4
Popularity
Beginner marine fish
reef-compatible
Availability
Common in shops
Shop availability
IUCN Status
LC
Least Concern
Biotope
Indo-Pacific
Récifs coralliens de l'océan Indien et Pacifique tropical.

Description

Pomacentrus caeruleus reaches 8 cm. Its body is uniformly bright blue, sometimes with silvery reflections. Juveniles may have a paler hue. It is a territorial fish that defends its shelter. It feeds on plankton, algae and small crustaceans. In aquariums, it is active and swims throughout the water column. It can become aggressive towards conspecifics if space is insufficient. Its hardiness makes it an excellent choice for community marine tanks.

Habitat

Region :

Shallow coral reefs, lagoons and rocky areas

Distribution :

Recommended parameters

Temperature2428 °C
pH8.18.4
GH812 °dGH
KH812 °dKH
NO₃
≤ 20 mg/L
PO₄
≤ 0.1 mg/L

Care

Difficulty
1/5
Diet
Omnivore
Min. tank
100 L
Min. group
1
Adult size
8 cm
Lifespan
5 years
Temperament
Semi-agressif
Propagation
Ponte sur substrat

Care notes

Temperature 24-28°C, pH 8.1-8.4, GH 8-12, KH 8-12. Nitrates <20 mg/L, phosphates <0.1 mg/L. A minimum 100-liter tank is suitable. Omnivorous diet: flakes, pellets, brine shrimp, mysis, algae. Compatible with most reef fish, but avoid very small fish. Provide live rock for hiding places. Can be kept in groups if the tank is large (over 300 L).

Similar species

Espèces proches, même habitat ou même maintenance

References