Green Chromis

Chromis viridis

Shimmering apple-green schools that hover above branching coral and dive into it together at the first sign of danger.

A peaceful saltwater fish that grows to 8 cm, lives in the middle of the tank in groups of 5 or more and needs 24–28 °C, pH 7.9–8.5 and an aquarium of at least 100 L.

Care at a glance

Water

Saltwater

Temperature

24–28 °C (75–82 °F)

pH

7.9–8.5

Adult size

8 cm (3.1 in)

Aquarium

100 L or bigger (26 US gal)

Temperament

Peaceful

Group size

5 or more

Swims

Middle

Diet

Omnivore

Wild home

Indo-Pacific reefs

Good to know

• Hardy. Tolerates less-than-perfect water. Great for beginners.

Tank mates

Good company: Banggai Cardinalfish, Firefish Goby, Flame Hawkfish, Golden Dwarf Moray, Harlequin Shrimp, Mandarin Dragonet, Neon Goby, Peacock Mantis Shrimp, Skunk Cleaner Shrimp, Yellow Watchman Goby.

Eaten by: Clown Triggerfish, Lantern Anglerfish, Lionfish, Snowflake Moray.

Attacked by: Clown Triggerfish.

Eats the newborn fry of: Banggai Cardinalfish, Harlequin Shrimp, Neon Goby, Ocellaris Clownfish, Royal Gramma, Yellowtail Damselfish.

Its fry are eaten by: Banggai Cardinalfish, Emperor Angelfish, Firefish Goby, Flame Hawkfish, Golden Dwarf Moray, Leafy Seadragon, Ocellaris Clownfish, Peacock Mantis Shrimp, Porcupine Puffer, Psychedelic Frogfish, Regal Angelfish, Royal Gramma and 3 more.

Grown ones eat their own newborn fry, so raise the young in another aquarium.

Colours and breeding

• Classic common
• Blue Reef Chromis uncommon

In Aquarius a grown male and female breed in a healthy tank. Their young are born about 0.4 cm long and take after one of the parents.

The care values are the ones Aquarius uses, based on how these animals live. Tank mates follow the game's rules: water type, temperature and pH, who can swallow whom, fin nipping, temperament and territory.