Rock Beauty Angelfish
Holacanthus tricolor
Holacanthus tricolor has an oval, compressed body, with a bright yellow head and anterior part, a black body, and a yellow caudal fin. The dorsal and anal fins are edged in blue. Juveniles are yellow with black spots. This species reaches 25 cm in adulthood. It is active and spends its time foraging on the reef. Its diet consists of sponges, algae, and small crustaceans. In aquariums, it can become aggressive towards other angelfish.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 24–28 |
| pH | 8.1–8.4 |
| GH | 8–12 |
| KH | 8–12 |
| Salinity | 1.02–1.025 |
| NO₃ | ≤ 20 |
| PO₄ | ≤ 0.05 |
Care
Care notes
Temperature 24-28°C, pH 8.1-8.4, salinity 1.020-1.025. A minimum tank size of 300 liters is recommended. Provide live rock and hiding places. Diet should include sponges, algae, and mysis. Avoid keeping it with other similarly sized angelfish. Water parameters must be stable, with nitrates <20 mg/L. Moderate lighting and flow are suitable. Captive breeding is exceptional.