Lightly Medicated | Majestic Angelfish

What “Lightly Medicated” means

This is the same animal as our non-quarantined listing, held briefly in our systems and given one short prophylactic course — a light treatment for ich and for internal and external worms — then observed eating in front of us before it goes home.

A light course knocks the parasite load down. It does not guarantee full removal, and we will not pretend otherwise. Ich is only killed in its free-swimming stage, and a short treatment window can miss cysts entirely; worm burdens can survive a single dose. Clearing an animal takes the full quarantine window — 40 to 90 days depending on the species — which is exactly what the Quarantined listing is for. This tier buys you a lower parasite load and a fish we have watched eat, not a cleared animal.

We condition the fish on our end. Every animal we medicate is brought back onto prepared food on our own systems and is eating before it leaves — in practice it is rare for a lightly medicated fish to ship out and arrive sick. Do the same at your end: get it eating in your aquarium before you count it settled.

When it ships

Plan on 5–7 days on our systems for the treatment course, and it does not leave until it is eating. If the animal is not already in our systems we source it first — allow up to two weeks for it to reach us before that clock starts. From the day you order, plan on roughly three weeks in total.

The guarantees

• Shipped orders: 24-hour live guarantee from confirmed delivery.
• In-store pickup: 7-day live guarantee — bring a water sample from your aquarium so we can test it before your livestock goes home with you.

Want the full program — treated, observed, confirmed eating, and covered for 28 days on pickup? That is the Quarantined listing. Run your own quarantine and just want the fish this week? The non-quarantined listing is cheaper still. The whole ladder is explained in Quarantined vs Non-Quarantined.

The Majestic Angelfish (Pomacanthus navarchus) is named for the sweeping, iridescent blue-and-white striping that curls across its body like a brushstroke, finished with a vivid yellow tail — a color combination that looks designed rather than evolved and makes it one of the most visually striking angels in the trade. Like every true angelfish, it carries a sharp, defensive spine concealed on its gill plate — the exact anatomical feature that distinguishes pomacanthid angelfish from butterflyfish, which look superficially similar but lack the hardware entirely.

Native to the Western Pacific from the Philippines to Australia and across the Indo-Pacific, the Majestic inhabits coral-rich zones at moderate depth, typically 20–40m, where it grazes on sponges, tunicates, and benthic algae. That sponge-heavy diet is why most angelfish this size are considered a reef risk: they actively seek out and eat the encrusting organisms that reef aquarists also try to cultivate. In a fish-only with live rock (FOWLR) or a non-invertebrate system, it’s an outstanding, long-lived centerpiece.

Juveniles look entirely different from adults — dark blue with white markings — and the adult coloration develops gradually over 6–18 months as the fish matures.

Scientific name: Pomacanthus navarchus
Origin: Western Pacific — Philippines, Indonesia, Papua New Guinea, and northern Australia — on coral-rich walls and slopes at 20–40m depth
Water parameters: Temp 72–82°F · Salinity 1.023–1.026 · pH 8.1–8.4
Tank requirements: 125 gal minimum; 180+ gal preferred; established FOWLR or fish-only system
Diet: Omnivore — sponge-based angelfish diet (New Life Spectrum, Ocean Nutrition), marine algae, meaty frozen foods
Compatibility: Not reef safe — will eat sponges, soft corals, and some LPS; semi-aggressive toward similar-sized angels
Husbandry note: Angels in the Pomacanthus genus that go off food are almost always in water that’s too cold, too warm, or have been harassed into submission by more aggressive tankmates. Rule out temperature and aggression before assuming disease.