Princess Anthias saltwater fish care guide

The Princess Anthias (Pseudanthias smithvanizi), also known as the Purple Queen Anthias or Princess Basslet, is a deepwater planktivore associated with steep reef walls and drop-offs, generally living below the depths most divers reach. Males carry a blend of magenta, purple, pink, and yellow with a pink bar along the upper lobe of the tail, while females are softer in tone, showing pink and orange with red markings on both tail lobes. Adults reach roughly 3.5 to 4 inches. This species reaches the aquarium trade only occasionally, and it is sought after by anthias keepers for its rarity and saturated color.

Plan on a 70-gallon aquarium or larger for adults, with a layout that balances long, open swimming lanes against rockwork, overhangs, and shaded caves where the fish can retreat. Because this anthias comes from deep water, it shows best under moderate to subdued lighting rather than high-intensity reef illumination, and shaded zones beneath ledges help it settle quickly. Strong water movement and excellent filtration suit its natural environment. In a mixed-species display, introduce the Princess Anthias before territorial or fast-moving fish so it can establish itself without pressure.

In the wild, this is a carnivorous planktivore that picks zooplankton and small crustaceans out of the current above the reef face. That constant grazing shapes captive feeding: the fish has a small stomach and a high metabolism, so it depends on frequent, modest meals rather than one large offering.

Frozen mysis shrimp, enriched brine shrimp, cyclops, and finely chopped seafood form the backbone of a good captive diet. Once a specimen is settled and feeding confidently, high-quality flake, pellet, and prepared marine rations are often accepted as well. Feed at least two to three times daily, and more often when possible, keeping portions small enough to be consumed in the water column before they settle.

Frozen Mysis Shrimp Enriched Brine Shrimp Cyclops Finely Chopped Seafood Marine Flake Marine Pellets
The Princess Anthias is a social, peaceful reef fish that spends its day hovering and feeding in open water above structure. Like other members of the genus, it is a protogynous hermaphrodite: should the dominant male be lost, the largest female can change sex and assume that role within the group. Adding this species early, ahead of territorial or fast-swimming fish, gives it time to claim a comfortable feeding zone.

Choose calm tankmates that will not outcompete it at feeding time, and avoid pairing it with aggressive or strongly territorial species that will monopolize the water column. It is considered reef safe and works well as a centerpiece fish in a reef display, coexisting with a broad range of other reef-safe fishes.

FAQ

Frequently Asked Questions

About the Princess Anthias

  • How big of a tank does a Princess Anthias need?
    A 70-gallon aquarium is the practical minimum for an adult. Combine open swimming room with rockwork, overhangs, and shaded areas so the fish feels secure.
  • How often should a Princess Anthias be fed?
    Offer small meaty meals at least two to three times per day, and more frequently if your schedule allows. Anthias have high metabolisms and small stomachs, so single daily feedings are not sufficient.
  • Is the Princess Anthias reef safe?
    Yes, it is considered reef safe and makes an excellent centerpiece for a reef display. Pair it with calm, reef-safe tankmates that will not outcompete it for food.