Blue damselfish
Chrysiptera cyanea
The body is elongated and entirely bright blue, sometimes with a yellow tint on the tail. The fins are translucent. It is an active fish that swims throughout the water column. It is territorial but can live in groups in a large tank. It reproduces by laying eggs on a flat surface. Males become more aggressive during breeding. It is a very common species in the aquarium trade.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 24–27 |
| pH | 8.1–8.4 |
| GH | 8–12 |
| KH | 8–12 |
| NO₃ | ≤ 20 |
| PO₄ | ≤ 0.1 |
Care
Care notes
A minimum tank size of 100 liters is sufficient. Temperature 24-27°C, pH 8.1-8.4. Salinity 1.020-1.025. It is a hardy fish that tolerates variations. Omnivorous diet: flakes, pellets, brine shrimp. It can be kept in groups of 3-5 in a large tank. Beware of intraspecific aggression. It is compatible with most reef fish. Stable parameters are needed to avoid stress.