Chromis viridis

Datasheet

General Description

The Blue/Green Reef Chromis, scientifically known as Chromis viridis, belongs to the Pomacentridae family, which includes clownfish, damselfish, and other Chromis species. These Chromis fish are characterized by their shiny blue and green hues, making them a visually appealing choice for aquarium enthusiasts. They are typically found in the East Indian Ocean, West Indian Ocean, Australia, Japan, The Red Sea, Indonesia, East Pacific, and Central/West Pacific regions. The maximum size of these fish can reach up to 8.0cm.

Aquarium Suitability

Blue/Green Reef Chromis are generally suitable for most aquarium setups due to their docile temperament, but they may exhibit aggression towards similar species, especially when they reach sexual maturity. They are happiest when kept in pairs or shoals, with a recommended ratio of 1 male to 5 or more females. These fish require a minimum tank size of 300 liters to thrive.

Demands

This species of Chromis is considered to have average hardiness, with individuals being shy and docile by nature. They can become more aggressive towards each other as they mature, especially if kept in small shoals. Maintaining an appropriate male-to-female ratio and providing ample hiding places can help mitigate aggression within the group. Blue/Green Reef Chromis are sensitive during transportation and acclimatization into a new aquarium.

Care and Hardiness

Blue/Green Reef Chromis are known to be relatively peaceful compared to other members of the Pomacentridae family. They prefer to hide among stony corals, such as Acropora coral, and other suitable structures within the aquarium. These fish require frequent feeding several times a day, particularly when newly added to the tank. Providing a varied diet of small crustaceans and zooplankton will help meet their nutritional needs.

Reef Suitability

Blue/Green Reef Chromis are considered reef safe and make an excellent choice for reef aquariums. These fish may exhibit territorial behavior, especially when defending their hiding places or when carrying eggs. Ensuring they have ample space and suitable shelter within the reef setup can help minimize aggressive interactions with other tank inhabitants.

Aquarium Setup

To create an ideal habitat for Blue/Green Reef Chromis, aquarists should provide a well-aerated tank with a stable temperature ranging from 22.2 to 25.6 degrees Celsius. Maintaining water parameters within the recommended ranges of a pH of 8.1-8.4, a specific gravity of 1.020-1.025, and a carbonate hardness (KH) of 8-12 dKH is crucial for their well-being. Additionally, incorporating live rock structures and corals for hiding and exploration can enhance their environment.

Behaviour

Blue/Green Reef Chromis are known for their social behavior when kept in pairs or shoals, exhibiting shoaling tendencies in the aquarium. However, as they mature, they may become more territorial and aggressive towards one another. Providing multiple females per male and sufficient space can help distribute aggression within the shoal, promoting a more harmonious dynamic.

Feeding and Diet

These Chromis fish primarily feed on zooplankton and must be fed frequently to ensure their nutritional requirements are met. Their diet should include small crustaceans like krill, mysis, and artemia, as well as zooplankton such as cyclops and pods. Offering a diverse diet rich in protein and essential nutrients will contribute to their overall health and well-being.

Habitat and Distribution

Blue/Green Reef Chromis can be found inhabiting various regions across the East Indian Ocean, West Indian Ocean, Australia, Japan, The Red Sea, Indonesia, East Pacific, and Central/West Pacific. They prefer environments with ample hiding places among stony corals and structures like Acropora coral. Creating a habitat that mimics their natural surroundings, with suitable hiding spots and live rock formations, can help these fish feel secure and thrive in a home aquarium.