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Half-and-Half Chromis (Chromis dimidiata)

Find Half-and-Half Chromis across reef-livestock retailers on ReefDock. Compare sources, check known pricing where available, and review care information before you buy.

Half-and-Half Chromis
Photo: Emőke Dénes · CC BY-SA 4.0
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Where to buy Half-and-Half Chromis

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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  • Amazon

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  • Petco

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About Half-and-Half Chromis

A small damselfish with distinctive two-tone coloration: the anterior half of the body is bright blue or bluish-green, while the posterior half and tail are yellowish or golden-orange. The body is compressed and streamlined, typical of the Chromis genus, with rounded fins and a small terminal mouth.

Key facts

Water Parameters
Temperature: 72-78°F pH: 8-8.3 Salinity: 1.02-1.025
Min tank size
30 gallons
Appearance
A small damselfish with distinctive two-tone coloration: the anterior half of the body is bright blue or bluish-green, while the posterior half and tail are yellowish or golden-orange. The body is compressed and streamlined, typical of the Chromis genus, with rounded fins and a small terminal mouth.
Care Requirements
• Minimum 30 gallon tank • Maintain temperature 72–78 °F and salinity 1.020–1.025 • pH should remain between 8.0–8.3 • Provide live rock and coral décor for shelter and to reduce aggression • Compatible with peaceful fish and reef invertebrates; may harass smaller fish in confined spaces • Perform 25% water changes every 2–3 weeks to maintain water quality
Reef safety
Reef Safe
Difficulty Level
This is an easy-to-care-for damselfish suitable for beginners and established reef aquarists. It is hardy, adapts well to captive conditions, and tolerates a range of water parameters within standard reef norms.
Diet
omnivore
Feeding Schedule
2-3 times daily
Diet Details
Feed high-quality flake foods, small pellets, and frozen preparations such as mysis shrimp and copepods. Offer small portions 2–3 times daily. They will also graze on microalgae and filamentous algae in the aquarium.
Temperament
Semi Aggressive
Origin
Indo-Pacific region, ranging from the Red Sea and East Africa through the Indian Ocean to the Great Barrier Reef and Micronesia.
Common Health Issues
Ich (white spot disease), bacterial infections, parasitic copepods

Research before you buy

ReefDock is the sister app to Reef Trak. Use Reef Trak to research and log fish, keep tank parameters organized, and maintain a complete livestock history. Log this fish on Reef Trak.

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