Holacanthus passer 12cm WYSIWYG

Holacanthus passer: The King of Pacific Angelfish

The Holacanthus passer, also known as the king angelfish, is a true icon of the Eastern Pacific reefs. This splendid fish with an oval silhouette displays flamboyant colors and fascinating behavior, especially among juveniles who adopt a cleaner role within their marine environment.

This large angelfish is distinguished by its ability to graze on sessile invertebrates like sponges, while also consuming algae and plankton. In its natural habitat, it often thrives in rocky coastal waters, where it occupies a well-defined territory.

A Monogamous Species with Territorial Behavior

The Holacanthus passer is an oviparous and monogamous fish. Females are more territorial and form lasting bonds with males. Reproduction is generally observed at the end of summer. This species is also known for its ability to form natural hybrids with other species such as Pomacanthus zonipectus.

Aquarium Care Conditions

• Minimum required volume: 800 to 1000 liters
• Water temperature: between 22°C and 26°C
• Behavior: territorial, especially among females
• Compatibility: avoid small fish and sensitive invertebrates

In captivity, the king angelfish Holacanthus passer must be placed in a very large aquarium and without corals due to its specialized diet and grazing behavior. It is preferable to keep it alone or as a pair if space permits.

Varied Diet but Focused on Sponges

The Holacanthus passer primarily feeds on marine sponges, but also eats algae and plankton. In an aquarium, it is essential to provide a suitable diet, including:

• Homemade preparations enriched with sponges,
• Pellets for angelfish,
• Thawed brine shrimp, mysis, and krill,
• and some vegetable supplements like dried nori.

This fish requires special attention in terms of nutrition. A lack of sponge intake can quickly lead to deficiencies or weight loss.

A Jewel for Fish-Only Aquariums

The Holacanthus passer angelfish is an animal reserved for experienced aquarists. Due to its size, diet, and specific space needs, it is not suitable for classic reef tanks. However, it shines brightly in a prestigious fish-only aquarium, where it becomes the centerpiece of a living marine décor.

Its territorial behavior, monogamy, and longevity make it a captivating companion for those who can provide a stable and suitable environment.