Blue Reef Chromis

About this fish

Blue Reef Chromis is a small reef fish sold as a “blue reef” chromis variety, and the scientific name is Chromis cyanea (damselfish). In an aquarium, chromis are often used as active midwater swimmers to add constant motion to the tank and to create a schooling presence when kept with compatible fish. This listing is suitable for hobbyists who can maintain stable marine water quality and provide a diet of appropriately sized meaty foods.

Features:

• Active midwater swimmer that adds movement and a lively look to reef and fish-only marine setups
• Best maintained in groups when possible, as chromis may become territorial toward conspecifics when kept singly
• Typically helps fill the water column rather than grazing heavily on corals
• Generally considered compatible with common reef tanks when introduced appropriately and not paired with aggressive tankmates
• Responds well to frequent feedings of small, meaty foods to support growth and color

Specifications:

• Care level: Moderate (requires stable, well-established marine water)
• Temperament: Generally peaceful with proper tankmates; may show aggression toward other chromis
• Placement: Mid-to-upper water
• Diet: Meaty, fine foods (e.g., prepared foods designed for marine fish and appropriately sized frozen foods)
• Temperature: About 72–78°F (22–26°C)
• Salinity: About 1.020–1.026 SG
• pH: About 8.0–8.4
• Adult size: Approximately 4 inches (10 cm) depending on conditions