Evansi anthias
Pseudanthias evansi
Also known as Yellowback Anthias, Yellowtail Anthias, Evans' Anthias, Evansi Fairy Basslet
SaltwaterFish
Care at a glance
- Temperature
- 75–81°F
- 24–27°C
- pH
- 8.1–8.4
- Adult size
- 4.7 in
- 12 cm
- Minimum tank
- 75 gal
- 285 L
- Temperament
- Peaceful
- Social behavior
- Social
- Swim level
- Middle
- Diet
- Carnivore
- Difficulty
- Difficult
- Breeding
- Hard
- Rarity
- Common
- Reef safe
- Reef safe
- Family
- Serranidae
- Origin
- Western Indian Ocean including the Maldives and East Africa, on outer reef slopes.
Overview
The Evansi anthias is a peaceful anthias that swims in the middle of a reef tank. It is best for experienced keepers who can maintain steady conditions.
Did you know
The Evansi anthias is a protogynous hermaphrodite, so every fish in a group starts as a female. If the lone male dies, the top female changes sex to replace him.
Caring for the Evansi anthias
House a single Evansi anthias in at least 75 gal (285 L). A male with five or more females needs 470 liters or more. A group sorts itself into one male with several females. Provide open swimming water and plenty of rock for retreat.
Keep the water at 75 to 81°F (24 to 27°C), with good flow and a pH of 8.1 to 8.4. It is sensitive to water quality and diet, so hold conditions stable. Feed copepods, mysis and enriched brine shrimp several times daily.
The Evansi anthias is peaceful, reef safe and coral-friendly. Breeding it is hard.
Good to know
Pseudanthias evansi is an anthias in the family Serranidae, with a violet body and a bright yellow back and tail. Most aquarium fish stay smaller than its full size, nearer 8 to 10 cm.
In the wild
The Evansi anthias comes from the western Indian Ocean, centered on the Maldives and East Africa. It lives on outer reef slopes, where it shoals in open water and feeds on drifting plankton.
Weekly picks
Tank mates
The Evansi anthias is a peaceful, social species that keeps to the middle. These picks share a community profile with it, are safe together in both directions, and overlap on water type, temperature and pH.

Coral beauty angelfish
Centropyge bispinosa
Saltwater3.9 in (10 cm) · 50 gal (190 L)72–79°F (22–26°C)
Swallowtail angelfish
Genicanthus melanospilos
Saltwater7.1 in (18 cm) · 106 gal (400 L)72–79°F (22–26°C)
Divided leopard wrasse
Macropharyngodon bipartitus
Saltwater5.1 in (13 cm) · 55 gal (208 L)72–79°F (22–26°C)
Ring cowrie
Monetaria annulus
Saltwater1.2 in (3 cm) · 20 gal (75 L)75–81°F (24–27°C)
Flametail blenny
Enchelyurus flavipes
Saltwater3 in (7.5 cm) · 29 gal (110 L)72–79°F (22–26°C)
Skunk cleaner shrimp
Lysmata amboinensis
Saltwater2.4 in (6 cm) · 20 gal (75 L)73–81°F (23–27°C)
Common questions
What size tank does an Evansi anthias need?
An Evansi anthias needs at least 75 gal (285 L). It spends most of its time in the middle.
What temperature and pH does an Evansi anthias need?
An Evansi anthias is comfortable at 75–81°F (24–27°C) with a pH of 8.1–8.4.
What does an Evansi anthias eat?
An Evansi anthias eats copepods, mysis and enriched brine shrimp. Feed it several times a day, since it is sensitive to diet.
How big does an Evansi anthias get?
An adult Evansi anthias reaches about 4.7 in (12 cm).
Related species
4.7 in (12 cm)75 gal (285 L)75–81°F (24–27°C)Purple queen anthias
Pseudanthias tuka
4.7 in (12 cm) · 75 gal (285 L)
3.7 in (9.5 cm)70 gal (265 L)72–79°F (22–26°C)Dispar anthias
Pseudanthias dispar
3.7 in (9.5 cm) · 70 gal (265 L)
3.5 in (9 cm)70 gal (265 L)72–79°F (22–26°C)Bartlett's anthias
Pseudanthias bartlettorum
3.5 in (9 cm) · 70 gal (265 L)
3.1 in (8 cm)75 gal (285 L)75–81°F (24–27°C)Randall's anthias
Pseudanthias randalli
3.1 in (8 cm) · 75 gal (285 L)
4.7 in (12 cm)90 gal (340 L)75–81°F (24–27°C)Huchtii anthias
Pseudanthias huchtii
4.7 in (12 cm) · 90 gal (340 L)
5.1 in (13 cm)125 gal (475 L)72–79°F (22–26°C)Bicolor anthias
Pseudanthias bicolor
5.1 in (13 cm) · 125 gal (475 L)
