Bartlett's Anthias
Pseudanthias bartlettorum
Also known as Bartlett's Fairy Basslet, Yellowtail Anthias
Care at a glance
- Temperature
- 72–79°F (22–26°C)
- pH
- 8.1–8.4
- Adult size
- 3.5 in (9 cm)
- Minimum tank
- 70 gal (265 L)
- Temperament
- Peaceful
- Social behavior
- Social
- Swim level
- Middle
- Difficulty
- Medium
- Breeding
- Hard
- Rarity
- Common
- Reef safe
- Reef safe
- Origin
- Western Pacific (Marshall and Caroline Islands)
- Family
- Serranidae
Overview
One of the hardier and more peaceful anthias, which makes it a good first anthias, but it is still a constant planktivore that needs several small feedings a day of mysis, enriched brine, cyclops and pellets. Keep it as a harem of one male with several females; it harasses subdominant group members far less than the lyretail, so groups stay stable in modest tanks. Genuinely peaceful toward other fish.
In the wild
Comes from clear outer-reef waters of the western Pacific, especially around the Marshall and Caroline Islands, where it schools in the open water above coral heads feeding on drifting plankton. It likes strong water movement and open space to swim, with live rock nearby for shelter. In captivity it appreciates a mature reef with plenty of caves and briskly moving water.
Good to know
Like other Pseudanthias, Bartlett's Anthias is a protogynous hermaphrodite that changes from female to male as the dominant fish in a group. Males show a magenta-to-lavender body with a yellow back and tail, while females are more uniformly yellow and violet. Its name honors the Bartlett family who collected early specimens.
Did you know
It is widely considered one of the easiest anthias to get eating prepared foods, taking frozen and even pellet food more readily than most of its relatives, which is why it is a common gateway into the group.
Where to buy
Some links may not be the exact species or variety.
- LiveAquaria Freshwater and saltwater fish, inverts and corals
- Saltwaterfish.com Marine fish, corals and inverts shipped overnight
…or ask your local fish store.
Appears in
Keeping Bartlett's Anthias?
Track water tests, reminders and stocking fit.
Related species

Dispar Anthias
Pseudanthias dispar3.7 in (9.5 cm)70 gal (265 L)72–79°F (22–26°C)Randall's Anthias
Pseudanthias randalli3.1 in (8 cm)75 gal (285 L)75–81°F (24–27°C)
Evansi Anthias
Pseudanthias evansi4.7 in (12 cm)75 gal (285 L)75–81°F (24–27°C)
Purple Queen Anthias
Pseudanthias tuka4.7 in (12 cm)75 gal (285 L)75–81°F (24–27°C)
Huchtii Anthias
Pseudanthias huchtii4.7 in (12 cm)90 gal (340 L)75–81°F (24–27°C)
Bicolor Anthias
Pseudanthias bicolor5.1 in (13 cm)125 gal (475 L)72–79°F (22–26°C)
