Queen Angelfish

Geographic Origin and Biotope: Undisputed queen of the central-western Atlantic Ocean. Ranges from Florida to the Caribbean, down to the coast of Brazil and the Gulf of Mexico. Inhabits rich, colorful, sun-kissed coral reefs, preferring to linger near sea fans and huge colonies of marine sponges.

Taxonomy and Morphology: Known as the Queen Angelfish. It is an enormous pomacanthid, capable of reaching nearly 45 cm (18 inches). The body is deep, majestic, and shaped like a laterally compressed disc. The snout is prominent with brush-like teeth. The dorsal and anal fins end in extremely elongated trailing filaments in adulthood.

Social Behavior: A fish with an imperious nature, solitary or in stable pairs, and aggressive towards those it perceives as a threat. Explores the entire aquarium with calm, arrogant, and proud swimming. It dominates almost all other fish; it is advisable to introduce it as the very last inhabitant after weaker fish have established territories.

Coloration and Sexual Dimorphism: Drastic change between ages: juveniles are dark metallic blue with curved vertical light blue stripes. Adults are a dazzling blue/green/yellow, with yellow fins bordered in blue. The "royal" distinguishing feature is the crown ("ciliaris") on the forehead: a black spot ringed with brilliant electric blue. No apparent sexual dimorphism.

Aquarium Setup: Demands mammoth tanks: MINIMUM 800-1000 liters (210-260 gallons) to house a single adult. It needs a massive amount of open water swimming space combined with high rock formations (central or atoll rockwork) to provide nocturnal shelter. Intense lighting is necessary to emphasize its dazzling colors.

Diet and Feeding: Specialized spongivore. In the wild, over 90% of its diet consists of siliceous sponges (toxic to many other fish). In captivity, it is crucial to provide the highest quality feeds formulated specifically for large angelfish, containing sponge extracts, in addition to macroalgae, krill, and freshly chopped clams.

Water Quality: Tropical marine water in impeccable conditions. Such a large fish generates terrifying organic loads. pH strictly between 8.1 and 8.4, specific gravity 1.023-1.025, temperature 24-28°C (75-82°F). A high-end protein skimmer and an ozone reactor are highly recommended to maintain the ideal redox potential and crystal clear water.

Compatibility and Tankmates: Absolutely NOT suitable for common reef aquariums (Reef Safe: NO), as it ruthlessly devastates any LPS coral, gorgonian, and ornamental sponge. Ideal for immense FOWLR aquariums along with other dominant fish: Triggerfish, Large Groupers, large Tangs (Acanthurus), and moray eels.

Aquarium Reproduction: Impossible for private hobbyists. In the open Caribbean seas, a single male presides over a vast territory with several females. They reproduce pelagically at dawn or dusk by releasing hundreds of thousands of transparent eggs. They do not protect the eggs in any way.

Risks and Diseases: Subject to Head and Lateral Line Erosion (HLLE) syndrome if the diet is poor in vitamin C, spirulina, and sponges (or if kept with poor quality dusty activated carbon). If purchased as a full adult, it struggles enormously to get used to flake food; it is better to start with a sub-adult.