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By Bob Goemans
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Chromis

Chromis enchrysura

Jordan & Gilbert, 1882

Caribbean Chromis, Yellowtail Reef Fish

Likely Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Western Atlantic Ocean: Florida, Bermuda, and various islands in the Caribbean, and south to southern Brazil.

Size: 4 inches (10 cm)

Natural Environment: Inhabits steep reef faces and slopes at depths between 65 to about 500 feet (20 – 150 m) and often found in small groups of ten, where it feeds mainly on planktonic crustaceans (copepods, mysis, and shrimp larvae), fish eggs, and algae.

General Husbandry: Rarely seen in the trade and having a greyish body, yellow tail, and yellow on the aft dorsal and anal fins.

Quite hardy, peaceful, and better maintained in small groups of at least five to seven members. Should be given wide-open swimming areas, yet an aquarium having caves and ledges to take shelter. This is also a low light/deep water species, therefore a dimly lit aquarium would suit this species much more than a brightly lit reef aquarium.

As to diet, will eat most regular aquarium foods, e.g., live fortified brine shrimp and/or finely chopped various frozen or fresh meaty foods such as mysis, squid, fish flesh, shrimp, clam, etc., and plant material, e.g., flake foods, especially those containing Spirulina and should be offered several times daily.

Taxonomy:

    Order: Perciformes

    Suborder: Labroidei

    Family: Pomacentridae

    Subfamily: Chrominae

    Genus: Chromis

FYI: Even though quite passive and will ignore other fish in the aquarium, larger aquariums, e.g., 50 gallons and above for this species provide far more openness for small shoals to ‘peacefully’ coexist.

If maintained in groups of less than mentioned above, they tend to be over dominate of each other and may force some members into hiding. The bigger the group, the less intergroup picking on each other exists.

Experience Level: Beginner

Temperament: Peaceful

Diet: Zooplanktivore/Omnivore

Coral Safe: Yes

Invertebrate Safe: Yes

Acclimation Time: 30 minutes+

Aquarium Environment: Reef or fish-only aquarium

Tankmates: Peaceful

Minimum Tank Size: 50 gallons

Temperature Range: 70 - 82°F (21 – 27°C)

Specific Gravity: 1.020 - 1.026

pH: 8.0 - 8.5

 Chromis enchrysura (Caribbean Chromis, Yellowtail Reef Fish)
Photo © oceanexplorer.noaa.gov
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