Yellow-backed anthias
(Pseudanthias evansi)

Description

The user wants a product description for *Pseudanthias evansi*. I have gathered the following information:

* **Common Names:** Evans’ Anthias, Yellowback Anthias, Yellowtail Goldie, Two coloured coralperch
* **Appearance:** Predominantly violet-pink to purplish-blue body, flanks sprinkled with yellow dots, a yellow back, dorsal fin, and tail. An orange line runs laterally from nose to pectoral fin; a red stripe from eye to gill, and light red freckles on sides. Males may have more vivid colors and longer fins.
* **Behavior:** Peaceful, active, social, schooling species, darting about the tank, prefers swimming mid-level. Can be shy and timid, prone to hiding in rocky crevices, especially when newly introduced or threatened. Can jump out of open aquaria. Protogynous hermaphrodite (all born female, dominant female becomes male).
* **Care Level:** Difficult/Advanced/Intermediate to Professional due to rigorous dietary needs and sensitivity during transport/acclimation.
* **Temperament:** Peaceful but can be aggressive towards similar species or within smaller groups if space is limited. Best kept with other peaceful non-aggressive fish.
* **Compatibility:** Reef safe; will not bother corals or invertebrates. Caution with smaller shrimp/crustaceans as potential prey.
* **Minimum Tank Size:**
* Single specimen: 70-75 gallons (265-284 L)
* Group/community: 100-125 gallons (378-473 L) or 400 L for general “minimum volume”
* For a shoal of 8+ (recommended for groups to diffuse aggression), XXL proportions needed. I will go with 400L (approx 105 gallons) as a good general minimum for proper care, emphasizing larger for groups.
* **Water Parameters:**
* pH: 8.0-8.5, 8.1-8.4 – Consensus is 8.1-8.4.
* Temperature: 22-27°C (72-80°F), 22-26°C (72-78°F), 25-28.9°C – Consensus is 22-27°C.
* Specific Gravity/Salinity: 1.020-1.026, 1.020-1.025.
* **Diet:** Carnivore/planktivore. Requires frequent feedings (multiple times a day, 3-5 times/day, especially when new) of varied, meaty, planktonic foods. Frozen mysis shrimp, enriched frozen brine shrimp, copepods, amphipods, cyclops, artemia, fortified live adult brine shrimp, finely chopped marine fish/invertebrate flesh, and over time may accept high-quality flakes/pellets. An attached refugium is beneficial.
* **Maximum Size:** 10 cm (4 inches) to 12 cm (4.7-5 inches). I will use 12 cm.
* **Origin:** Indian Ocean: East Africa to the Cocos-Keeling and Christmas islands, north to the Andaman Sea. Includes Maldives, Sri Lanka, Indonesia, Western Pacific, Australia, Japan. I will simplify to Indo-Pacific / Indian Ocean.
* **Lifespan:** 3-5 years, possibly longer; up to 5-7 years with proper care. I will use 5 years.
* **Swimming Zone:** Mid-level, open water areas, upper third of the tank, darting about.
* **SEO Keywords:** “buy Evans’ Anthias online”, “Yellowback Anthias care”, “healthy aquarium fish”.

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Evans’ Anthias: A Dazzling Gem for Advanced Aquarists

The elegant Evans’ Anthias adds a dynamic splash of violet-pink and yellow to your reef, captivating with its active schooling behaviour. A true centrepiece, it thrives in well-maintained, mature marine systems.

Overview

The Evans’ Anthias, *Pseudanthias evansi*, is a breathtaking addition to the discerning marine aquarium. Its body displays a beautiful violet-pink hue, often accented with delicate yellow speckles, transitioning to a striking yellow on its back, dorsal fin, and tail. An orange line extends from its snout towards the pectoral fin, adding further appeal. These active, peaceful anthias are protogynous hermaphrodites, typically forming vibrant harems, adding continuous movement to your display.

Care Level

Considered a difficult to advanced species, Evans’ Anthias require dedicated care and attention, making them best suited for experienced aquarists. They possess a peaceful temperament but can be timid, needing non-aggressive tankmates. While generally reef-safe, careful observation is recommended with very small ornamental crustaceans.

Tank Essentials

A minimum of 400 litres is recommended for a healthy Evans’ Anthias, with larger aquariums (470L+) essential for keeping groups to diffuse potential aggression. Provide ample live rock for hiding spots and a strong current to mimic their natural reef slopes. Ensure a tight-fitting lid, as these fish are known jumpers. Optimal water parameters are a pH of 8.1-8.4 and a temperature of 22-27°C.

Diet

As planktivores, Evans’ Anthias require frequent feedings (3-5 times daily) of a varied, meaty diet. Offer frozen mysis shrimp, enriched brine shrimp, copepods, and finely chopped marine foods. An attached refugium can help provide a steady supply of nutritious live food, crucial for their long-term health.

Why Buy From Us

When you buy Evans’ Anthias online from Corais de Vidro, you receive healthy aquarium fish responsibly sourced and meticulously cared for. Our rigorous quarantine protocols ensure robust specimens, ready to thrive in your expertly prepared marine environment. We are committed to ethical practices and secure, humane shipping for every aquatic treasure.

• Scientific Name: Pseudanthias evansi
• Common Name / Variant: Evans’ Anthias / Yellowback Anthias
• Maximum Size: 12 cm
• Origin: Indian Ocean (East Africa to Andaman Sea)
• pH Range: 8.1–8.4
• Temperature: 22–27°C
• Lifespan: 5 years
• Swimming Zone: Mid

Add the stunning Evans’ Anthias to your reef aquarium today!