Blue Reef Chromis

Chromis cyaneus


(0 Reviews)

Blue Reef Chromis

Blue Reef Chromis

Chromis cyaneus


(0 Reviews)

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Care Facts

Size: 1.25-1.75 inch
Care Level: Easy
Temperament: Peaceful
Reef Safe: Yes
Diet: Omnivore
Origin: Caribbean
Acclimation Time: 3+ hours
Coral Safe: Yes
Invertebrate Safe: Yes
Minimum Tank Size: 20 gallons

The Blue Reef Chromis, Chromis cyaneus, also known as the Blue Chromis, is an active and peaceful fish that generally resides in the top half of the tank swimming in open water. It is a shoaling fish taht is best kept in large groups. They eat an omnivorous diet consisting of a range of meaty foods, and quality herbivorous flake and pellet food. Vitamin-enriched foods will help preserve the Blue Reef Chromis' vibrant blue sheen. The Blue Reef Chromis is an excellent beginner fish and is peaceful an able to cohabitate with most other fish species, corals, and inverts. 


The Alluring Blue Reef Chromis (Chromis cyaneus): A Delightful Addition to Saltwater Aquariums

The Blue Reef Chromis (Chromis cyaneus) is a captivating and vibrant fish that enchants saltwater aquarium enthusiasts with its stunning blue hue and peaceful nature. This delightful species, also known as the Blue Chromis, adds a touch of elegance and liveliness to marine setups. Let's delve into the world of the Blue Reef Chromis, covering its habitat, reef-safe nature, size, lifespan, diet, compatibility, suitable tank mates, tank requirements, other common names, and five compatible tank mates.

Habitat and Distribution of the Blue Reef Chromis

The Blue Reef Chromis is native to the tropical waters of the Caribbean. In the wild, they are commonly found in coral-rich areas and prefer to swim in large schools, creating a mesmerizing spectacle.

Reef-Safe Nature of the Blue Reef Chromis

The Blue Reef Chromis is entirely reef-safe, making it an excellent addition to reef aquariums. They are peaceful towards corals and other invertebrates, and their presence can create a dynamic and colorful display when kept in a group.

Size and Lifespan of the Blue Reef Chromis

Blue Reef Chromis are relatively small fish, typically reaching lengths up to 3 inches (7.5 cm). They can live for several years in a well-maintained aquarium with proper care, providing long-lasting enjoyment for their keepers.

Diet and Feeding Habits of the Blue Reef Chromis

In their natural habitat, Blue Reef Chromis primarily feed on plankton and small organisms in the water column. In an aquarium setting, they eagerly accept a varied diet, including high-quality marine flake or pellet foods and frozen and live foods like brine shrimp, mysis shrimp, and copepods.

Compatibility and Suitable Tank Mates for the Blue Reef Chromis

Blue Reef Chromis are known for their peaceful and sociable nature, making them compatible with many tank mates. They coexist harmoniously with other peaceful community fish, such as clownfish, gobies, wrasses, and small angelfish.

Tank Requirements for the Blue Reef Chromis

When setting up a tank for Blue Reef Chromis, it's crucial to provide ample swimming space and plenty of live rock or artificial reef structures for hiding and exploring. A well-maintained reef tank with stable water parameters is ideal for these dazzling and active fish. They do best in groups.

Other Common Names for the Blue Reef Chromis

Besides the name "Blue Reef Chromis," this species is also known as the "Blue Chromis.”


In conclusion, the Blue Reef Chromis (Chromis cyaneus) is a captivating addition to saltwater aquariums. It's stunning blue coloration and sociable nature make it a favorite choice for both novice and experienced marine enthusiasts. By creating a suitable environment and offering a diverse diet, aquarists can enjoy the beauty and allure of these delightful fish for years to come.

All of the Blue Reef Chromi's arrived in great condition and were larger than I was expecting. They are a pretty sight as they school peacefully near the upper levels in my tank.


Reviewed by: Dan Norcini on Oct. 16, 2023

Do in fact swim nicely together


Reviewed by: Alvin Barbes on July 17, 2023

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