Blue Damselfish
Chrysiptera cyanea
Reef Compatible: Yes
Care Level: Beginner
Disposition: Semi-aggressive
Min. Tank Size: 30 gallons
Mature Size: 3.5 inches
| Specification | Detail |
|---|---|
| Scientific Name | Chrysiptera cyanea |
| Reef Compatibility | Yes |
| Difficulty Level | Beginner |
| Adult Size | 3.5 inches |
| Minimum Tank Size | 30 gallons |
| Behavior | Semi-aggressive |
FAQ
Is the Blue Damselfish suitable for a beginner aquarium keeper?
Yes, the Blue Damselfish is considered beginner-friendly due to its manageable care requirements and adaptability to a stable reef environment.
Can Blue Damselfish coexist with other reef fish?
Yes, it is reef-compatible and can live with most reef fish, though it may show semi-aggressive behavior toward smaller or similar species.
What is the typical mature size of a Blue Damselfish?
The mature size of a Blue Damselfish is approximately 3.5 inches.

Joanne Newman –
Easy to set up and maintain. The fish is active and colorful, adds a nice touch to my 30-gallon tank. It’s peaceful with other fish except when sharing space with smaller species. Great for beginners.
Rachel Marshall –
Loved the vibrant blue color. It’s not overly aggressive, but it does defend its territory. I made sure to keep it with larger, calm fish. Overall, a satisfying addition to my reef setup.
Jennifer Abraham –
Perfect for a small reef tank. The fish stays healthy and shows good color even after a few weeks. I appreciate the beginner-friendly care level and the fact that it doesn’t eat corals.