Princess Anthias

Pseudanthias smithvanizi

Saltwater Fish Species Group: Anthias Family: Serranidae

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Water parameters

Temp 76-80 F Temperature

Maintaining a stable and appropriate temperature is critical for the survival of aquatic life.

pH 7.8 - 8.4 potential of Hydrogen

Measuring the acidity or alkalinity of water on a 0–14 scale, where 7 is neutral, 7 is alkaline.

NO3 1-20 ppm Nitrate

While less toxic than ammonia, high nitrate levels (above 40–80 ppm) are important to monitor because they can cause fish stress, stunted growth, and harmful algae blooms.

NO2 <0.0001 ppm Nitrite

It is a highly toxic, intermediate compound in the nitrogen cycle produced from broken-down ammonia

PO4 0.01 - 0.1 ppm Phosphate

It is essential for plant development but must be managed, as excess levels trigger nuisance algae blooms and inhibit coral calcification.

NH3 <0.1 ppm Ammonia

It is the primary killer of aquarium fish, causing gill damage, stress, and death

Ca 380 - 450 ppm Calcium

Supporting the growth, skeletal structure, and shell formation of corals, mollusks, crustaceans, and coralline algae

KH 8 - 12 dKH Alkalinity

It acts as a shield, neutralizing acids to prevent dangerous pH "crashes" that can harm fish, corals, and plants.

Mg 1200 - 1400 ppm Magnesium

It enables coral growth by supporting skeletal formation, assists in metabolic processes, and ensures that calcium is available for corals, clams, and coralline algae.

SG 1.023 - 1.026 SG Salinity

Essential for maintaining stable, natural water parameters, proper osmoregulation, and stress-free environments for marine fish and corals

ORP 250 - 400 mV Oxidation-Reduction Potential

A higher positive mV indicates clean, oxygen-rich water with high water quality, while low readings indicate high pollution.

About Princess Anthias

General information

The Princess Anthias is a relatively small species, reaching a maximum size of about 4 inches (10 cm) in length. They are a popular choice for aquarium enthusiasts due to their vibrant coloration, which includes shades of purple, pink, orange, and yellow. In the wild, they are found in large schools, often hovering in the water column over coral reefs. 
This saltwater species is native to the waters surrounding Vanuatu and nearby islands in the Western Pacific Ocean.

Diet & nutrition

In captivity, Princess Anthias should be fed a varied diet consisting of meaty foods such as brine shrimp, mysis shrimp, krill, and chopped seafood. It is recommended to feed small amounts multiple times per day.

Determining sex

Males are generally larger and more colorful than females.

Breeding & spawning

Breeding and spawning of the Princess Anthias is not well documented in captivity.

Diseases

Princess Anthias are susceptible to the same diseases and parasites as other saltwater fish species. Regular observation, maintenance, and quarantine procedures can help to prevent and treat common ailments.

Origination

The Princess Anthias is native to the waters surrounding Vanuatu and nearby islands in the Western Pacific Ocean.

Cautions

When introducing a Princess Anthias to a new aquarium, it is important to acclimate them slowly to prevent stress and potential illness. This species is also sensitive to poor water quality, so maintaining proper filtration and water parameters is crucial to their health and well-being.

Acclimation process

It is recommended to drip acclimate Princess Anthias for at least an hour to adjust properly to the new water parameters.

All photos

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