Green Chromis

Chromis viridis

(30 Reviews)

Green Chromis

Green Chromis

Chromis viridis

(30 Reviews)

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Green Chromis Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Reef Safe: Yes
Minimum Tank Size: 30 gallons
Max Size: 4 inches

Green Chromis

The Green Chromis, native to the Indo-Pacific region, flourishes in coral-rich coastal waters and shallow environments, making it a perfect fit for reef aquariums. It's essential to mimic their natural habitat by providing ample hiding spaces within live rock structures. While they are reef-safe, their schooling behavior is notable, requiring a group of at least five individuals for optimal well-being and stress reduction.

These hardy fish, with an average size of 3 inches, exhibit minimal sexual dimorphism and can live up to 10 years with proper care. Their omnivorous diet includes marine pellets, flakes, and supplemented live or frozen brine shrimp and mysis shrimp. With responsible sourcing prioritized by, aquacultured specimens are available, reducing the impact on wild populations while ensuring hardiness in tank environments. Maintaining stable tank conditions, including optimal water parameters and moderate water flow, contributes to their overall health and well-being.


Originating from the Indo-Pacific region, the Green Chromis (Chromis viridis) thrives in coral-rich environments and shallow coastal waters. In captivity, replicating their natural habitat involves providing ample hiding spaces with live rock structures.

Reef Compatibility and Behavior:

Considered reef safe, the Green Chromis adapts well to reef aquariums. Their schooling behavior is a notable characteristic, and maintaining a group of at least five individuals is recommended to ensure their well-being and reduce stress.

Size, Lifespan, and Sexual Dimorphism:

With an average size of 4 inches, the Green Chromis exhibits minimal sexual dimorphism. These hardy fish boast a lifespan of up to 10 years when provided with proper care, making them an enduring addition to marine aquariums.

Diet in Captivity:

The Green Chromis is an omnivorous species, accepting a variety of marine pellets and flakes. Supplement their diet with live or frozen brine shrimp and mysis shrimp to ensure a balanced nutritional intake.

Aquaculture and Availability prioritizes responsible sourcing, providing sustainably collected wild stock and aquacultured Green Chromis. Aquacultured specimens are acclimated to tank life, ensuring hardiness and reducing the impact on wild populations.

Tank Requirements

Maintaining optimal tank conditions is crucial. A minimum tank size of 30 gallons is recommended for a group of Green Chromis. Stable water parameters, including a pH of 8.1-8.4, salinity between 1.020 and 1.025, and a water temperature of 74°F to 78°F, contribute to their overall health. Moderate water flow replicates their natural environment.

Juvenile to Adult Coloration Changes:

Juvenile Green Chromis display a translucent green coloration, which intensifies as they mature into a vibrant green hue, creating a visually stunning display in a well-lit aquarium.

Compatible Tank Mates

  • Clownfish (Amphiprion ocellaris): Peaceful, prefers anemones, and suitable for reef aquariums.
  • Banggai Cardinalfish (Pterapogon kauderni): Gentle, tends to stay close to shelter, and suitable for a peaceful community tank.
  • Fire Goby (Nemateleotris magnifica): Peaceful, burrows in the substrate, and suitable for reef setups.
  • Yellowtail Damselfish (Chrysiptera parasema): Hardy, suitable for beginners, and adapts well to various tank setups.
  • Royal Gramma (Gramma loreto): Peaceful, vibrant coloration, and suitable for reef setups.

Reviewed by: Tiffany Nel on April 15, 2024

Reviewed by: Joshua Staats on April 14, 2024

Reviewed by: Jeremiah Campbell on April 3, 2024

I have six and they pretty much swim together all the time. They are peaceful and get along with my clowns just fine. They add great color and activity in the tank.

Reviewed by: Jason Richer on April 3, 2024


Reviewed by: Nicholas Calabria on April 1, 2024

Great quality

Reviewed by: Morris Charlton on March 27, 2024

Reviewed by: Scott Presley on March 25, 2024

Reviewed by: Thomas Gallagher on March 20, 2024

Very active swim around the tank a lot

Reviewed by: Jim Hauck on Feb. 28, 2024

Reviewed by: Daniel Gerecke on Feb. 25, 2024

Reviewed by: Jeffery Mona on Feb. 25, 2024

Reviewed by: Barbara Pinedo on Feb. 23, 2024

Reviewed by: Tim O'Shaughnessy on Jan. 31, 2024

I ordered 3 of these fish. Arrived healthy. Very active and beautiful fish.

Reviewed by: Nikki Shelton on Jan. 27, 2024

Healthy beautiful fish.

Reviewed by: Derek Meadows on Dec. 10, 2023

Reviewed by: Joseph Fortini on Dec. 6, 2023

Reviewed by: Mark Ernstrom on Nov. 19, 2023

Reviewed by: Robert Pilny on Oct. 31, 2023

Reviewed by: Jay Newell on Oct. 30, 2023

Reviewed by: Michelle Kuhn on Oct. 29, 2023

Reviewed by: Cedric Hills on Aug. 7, 2023

Reviewed by: David Orear on July 26, 2023

Reviewed by: Janice Ethridge on July 13, 2023

I bought 3 juveniles that were more green, but as they aged and received more frozen food, they turned blue. One of them will occasionally hide. Very peaceful and eager to eat.

Reviewed by: John Atella on June 7, 2022

Great addition to 28g Biocube reef tank. Very healthy and active. Add great color to coral tank.

Reviewed by: Lee Reynolds on Sept. 25, 2016

Great addition to any tank! The keep their color well as they get bigger. I have these in two different tanks and two different orders. First set is still thriving 3 years later!!

Reviewed by: Bill on Aug. 8, 2016

The fish was shipped extremely well, and it was a perfect addition to my reef tank. I acclimated according to the instructions, and I have had no problems with any of the fish I have received. What more can you ask for? Cheaper then my local fish store and it was delivered to my front door the next day.

Reviewed by: Josh on Feb. 7, 2016

I love the green chromis! They are very good with the other fish in the aquarium, and they love the baby brine shrimp!

Reviewed by: Kimberly Riedel on June 14, 2015

These are great fish. They acclimated very well. They are always out and swimming around. Their color changes under my lighting. Fun to watch.

Reviewed by: Kari Priborsky on April 13, 2015

The color of these make you fall in love. They are very peaceful. And as usual.. all of my order was healthy, well packaged, and shipped fast. I have great results with all my fish from Saltwaterfish.

Reviewed by: Lou on Aug. 4, 2014

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