Blue Devil Damsel - Chrysiptera cyanea
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The Blue Devil Damsel (Chrysiptera cyanea), also known as the Blue Damsel, is a small, vibrant reef fish renowned for its striking electric blue coloration and bold personality. Hardy and active, this damsel adds dynamic movement and color to the mid-water column of reef aquariums.
Common Name: Blue Devil Damsel
Scientific Name: Chrysiptera cyanea
Family: Pomacentridae
Size: Up to 2.5 inches (6 cm)
Temperament: Semi-aggressive
Difficulty: Easy
Reef Safe: With Caution
Native Region: Found throughout the Indo-Pacific, including Indonesia, the Philippines, and northern Australia, typically inhabiting coral-rich reef slopes, lagoons, and protected bays.
Tank Size: Minimum of 20 gallons
Temperature: 74–80°F (23–27°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate/Decor: Live rock with plenty of crevices and open swimming areas for grazing and hiding.
• Behavior: Semi-aggressive; may defend territory, especially in smaller tanks.
• Diet: Omnivorous—accepts flakes, pellets, and frozen foods such as mysis or brine shrimp.
• Tankmates: Best kept with other semi-aggressive or similarly sized fish; avoid very docile species that may be harassed.
• Care Needs: Hardy and adaptable, ideal for beginner reef aquarists, but provide ample hiding spaces to reduce stress.