Common name: Black-axil chromis

Scientific name: Chromis atripectoralis Welander & Schultz, 1951
Black Axil Chromis (Chromis atripectoralis)The black-axil chromis, Chromis atripectoralis, also known as the blackfin chromis or blue-green puller
Underwater scenic in Maldives - Dascyllus Aruanus - Chromis atripectoralis - Chromis ternatensis - Acropora nasutaBlue Chromis Chromis atripectoralis, an aquarium fish in an aquarium with no blue background.

General information

The Black Axil Chromis, Chromis atripectoralis, is a small and peaceful reef fish known for its striking blue-green coloration and distinctive black spot at the base of its pectoral fins. This species is a member of the Pomacentridae family, which includes damselfish and clownfish. They are a schooling species in the wild and can add a dynamic element to a home aquarium with their active swimming behavior.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 28 °C (75 to 82 °F)
Acidity
pH 8 to 8.4
Average size
10 cm (4″)
Care level
Easy Hardy and easy for beginners
Diet
Omnivore Flakes, pellets, and frozen foods
Social
School Best in groups of 5 or more
Reefsafe
Yes
Aggression
Peaceful
Captive bred
Yes Available as captive-bred

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Damselfish
    Pomacentridae
  6. Genus
    Chromis
    Chromis
  7. Species
    Black-axil chromis
    Chromis atripectoralis Welander & Schultz, 1951

Care

Black Axil Chromis are hardy and adaptable, making them suitable for both novice and experienced aquarists. They thrive in well-established aquariums with stable water conditions and plenty of swimming space. A tank with live rock formations for hiding and foraging will mimic their natural habitat. They are omnivorous and will accept a variety of foods, including flake, pellet, and frozen preparations.

Reproduction

In the wild, Black Axil Chromis are known to spawn in groups, with females releasing eggs into the water column to be fertilized by males. In the aquarium, breeding can occur if a group is kept, but raising the larvae can be challenging due to their small size and specific feeding requirements.

Habitat

Black Axil Chromis are found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They prefer shallow, clear waters of lagoons and outer reef slopes where they form large aggregations above staghorn corals and other branching corals.