Blue Reef Chromis

Blue Reef Chromis
Latin name:
(Chromis cyaneus)

Care Level








Preferred Conditions

sg 1.020-1.025, 72-78° F, dKH 8-12, pH 8.1-8.4

Avg. Max Size


Minimum Tank Size


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Insect Larvae & Salmon Recipe Fish Food
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Are you looking for a vibrant and active fish to add to your marine aquarium? Look no further than the Blue Reef Chromis! These small, colorful fish are a popular choice for aquarists of all levels, thanks to their hardiness and easy-going nature. In this guide, we’ll cover everything you need to know about caring for Blue Reef Chromis, from their diet and habitat to their behavior and breeding habits.

Blue Reef Chromis: An Overview

Blue Reef Chromis (Chromis viridis) is a species of damselfish found in the tropical waters of the Indo-Pacific region. They are typically found in shallow waters near coral reefs, where they feed on plankton and small invertebrates. Blue Reef Chromis are known for their bright blue coloration, which can vary in intensity depending on the individual fish. They are also relatively small, reaching a maximum length of about 3 inches.


Blue Reef Chromis are omnivorous fish that feed on a variety of foods, including plankton, small crustaceans, and algae. In the wild, they typically feed by swimming in the water column and picking food out of the water. In an aquarium, they can be fed a variety of live, frozen, and flake foods. Some good options include brine shrimp, mysis shrimp, and flake food specifically designed for marine fish.


Blue Reef Chromis prefer to live in shallow waters near coral reefs. They need a tank that is at least 10 gallons in size, with plenty of live rock for hiding and swimming. The water should be kept at a temperature between 72 and 78 degrees Fahrenheit, with a pH of 8.1 to 8.4. Blue Reef Chromis also need good water movement, so a powerhead or wavemaker is a must.


Blue Reef Chromis are generally peaceful fish, but they can be territorial towards other fish of the same species. They are also known to be jumpers, so it’s important to have a tight-fitting lid on your aquarium. Blue Reef Chromis are active fish that love to swim, so they need a tank that is large enough to provide them with plenty of space to move around.


Blue Reef Chromis are relatively easy to breed in an aquarium. They typically spawn in pairs, and the female will lay her eggs on a flat surface, such as a piece of live rock. The eggs will hatch in about 24 hours, and the fry will be free-swimming within a few days. The fry can be fed brine shrimp nauplii or other small live foods.

FAQs About Blue Reef Chromis

  1. Q: What is the lifespan of a Blue Reef Chromis?
    A: Blue Reef Chromis typically live for 5 to 8 years in an aquarium.
  2. Q: Are Blue Reef Chromis reef safe?
    A: Yes, Blue Reef Chromis are reef safe and can be kept in a reef aquarium with other peaceful fish.
  3. Q: What are some good tank mates for Blue Reef Chromis?
    A: Good tank mates for Blue Reef Chromis include clownfish, gobies, and other small, peaceful fish.


Blue Reef Chromis are a beautiful and active fish that are a great addition to any marine aquarium. They are relatively easy to care for and can be bred in an aquarium. If you are looking for a vibrant and colorful fish to add to your tank, the Blue Reef Chromis is a great option.