Passer Angelfish Care Guide
Holacanthus passer · Saltwater Angelfish
What Passer Angelfish look like
The Passer Angelfish (Holacanthus passer) exhibits a robust, laterally compressed body that can reach a maximum adult size of approximately 12 inches (30 cm). Its coloration is predominantly a vibrant yellow with striking blue accents along the dorsal and anal fins, and a distinctive blue ring encircling the eye, which serves as a key identifying feature. Sexual dimorphism is subtle, with males typically displaying slightly larger dorsal fins and more intense coloration than females. Defensive adaptations include a set of sharp, spiny dorsal fin rays that can be raised to deter potential predators. The species also possesses a lateral line system that aids in detecting water movements, enhancing its ability to navigate and avoid threats in its environment.
Behavior & temperament
Passer Angelfish are generally territorial and can exhibit aggressive behavior, particularly during breeding seasons. They are primarily found in the upper to mid-water column of coral reefs, where they establish and defend their territories. Breeding behavior involves elaborate courtship displays, including synchronized swimming and fin flaring. These fish are known to be moderately social, often forming loose aggregations, yet they can become aggressive towards intruders or other angelfish. Their temperament can vary, with individuals showing varying levels of aggression based on environmental factors and social hierarchies.
Diet & feeding
In the wild, Passer Angelfish are primarily herbivorous, feeding on algae, coral polyps, and other benthic invertebrates. In captivity, they require a varied diet that includes high-quality marine pellets, spirulina, and fresh vegetables to ensure optimal health and coloration.
Behind the name
The genus name 'Holacanthus' is derived from the Greek words 'holos' meaning 'whole' and 'akanthos' meaning 'thorn', referring to the spiny dorsal fin. The species name 'passer' is Latin for 'sparrow', possibly alluding to the fish's small size and agile movements.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Passer Angelfish?
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