Bartlett’s Anthias

Bartlett's Anthias
Latin name:
(Pseudanthias bartlettorum)

Care Level





Orange, Purple, Red, Yellow



Preferred Conditions


Avg. Max Size

sg 1.020-1.025, 72-78° F, dKH 8-12, pH 8.1-8.4

Minimum Tank Size



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Have you ever heard of the Bartlett’s Anthias? If not, you’re in for a treat! This vibrant fish is a true spectacle of the underwater world. Let’s dive in and explore the fascinating world of the Bartlett’s Anthias.

Bartlett’s Anthias: A Fish of Many Colors

The Bartlett’s Anthias, scientifically known as Pseudanthias bartlettii, is a small yet stunning fish found in the tropical waters of the Indo-Pacific region. It’s renowned for its captivating coloration, which can vary from bright red to deep orange, with hints of yellow and pink. The males, in particular, display a mesmerizing pattern of stripes and spots, making them a sight to behold.

Habitat and Behavior

Bartlett’s Anthias typically inhabit coral reefs, where they can be found swimming in small groups or pairs. They’re known for their playful and energetic behavior, often engaging in synchronized swimming displays. These fish are also quite social and can be seen interacting with other species, such as cleaner wrasses, which help keep them free of parasites.

Diet and Feeding Habits

Bartlett’s Anthias are opportunistic feeders, primarily consuming zooplankton and small crustaceans. They’re active hunters, using their sharp eyesight and quick reflexes to capture prey. Their diet also includes small fish, which they may chase down or ambush.

Importance in the Marine Ecosystem

Bartlett’s Anthias play a vital role in maintaining the health of coral reefs. As predators, they help control populations of zooplankton and small fish, preventing overgrazing of corals. Additionally, their vibrant coloration serves as a warning to potential predators, helping to protect them from larger fish.

Captivating Characteristics of the Bartlett’s Anthias

What makes the Bartlett’s Anthias so captivating? Let’s explore some of their unique characteristics:

Coloration and Patterns

The Bartlett’s Anthias is renowned for its vibrant coloration and intricate patterns. The males, in particular, display a mesmerizing array of colors, including bright red, orange, yellow, and pink. These colors are believed to play a role in attracting mates and deterring predators.

Social Behavior

Bartlett’s Anthias are highly social fish, often forming small groups or pairs. They engage in synchronized swimming displays, where they move in unison, creating a mesmerizing spectacle. This behavior is thought to strengthen social bonds and help them coordinate their movements during feeding and predator avoidance.

Habitat and Distribution

Bartlett’s Anthias are found in the tropical waters of the Indo-Pacific region, including the Red Sea, East Africa, and the Pacific Ocean. They typically inhabit coral reefs, where they can be found swimming in shallow waters near the surface.

Bartlett’s Anthias in the Aquarium Trade

Due to their captivating appearance and relatively easy care, Bartlett’s Anthias are popular among marine aquarium enthusiasts. However, it’s important to note that these fish require specialized care and a well-established aquarium to thrive.

Aquarium Requirements

Bartlett’s Anthias require a spacious aquarium with plenty of swimming space. The tank should be equipped with live rock, which provides hiding places and grazing areas for the fish. Additionally, the water should be kept clean and well-oxygenated, with stable temperature and pH levels.

Diet and Feeding

In captivity, Bartlett’s Anthias can be fed a variety of live, frozen, and prepared foods. A balanced diet should include a mix of zooplankton, small crustaceans, and occasionally small fish. It’s important to feed them regularly, but avoid overfeeding, as this can lead to health problems.

Compatibility with Other Species

Bartlett’s Anthias are generally peaceful fish and can coexist with other non-aggressive species in a community aquarium. However, it’s important to choose tank mates carefully, as some larger or more aggressive fish may pose a threat to them.

FAQs About Bartlett’s Anthias

Here are some frequently asked questions about Bartlett’s Anthias:

Q: How big do Bartlett’s Anthias get?

A: Bartlett’s Anthias typically grow to a maximum length of around 6 inches (15 centimeters).

Q: What is the lifespan of a Bartlett’s Anthias?

A: In captivity, Bartlett’s Anthias can live for up to 10 years with proper care and maintenance.

Q: Are Bartlett’s Anthias easy to care for?

A: While Bartlett’s Anthias are relatively easy to care for compared to other marine fish, they still require specialized care and a well-established aquarium to thrive.


The Bartlett’s Anthias is a captivating fish that brings beauty and excitement to the marine aquarium. With its vibrant coloration, playful behavior, and importance in the marine ecosystem, it’s no wonder why this fish is a favorite among aquarists. Whether you’re an experienced marine aquarium enthusiast or just starting out, the Bartlett’s Anthias is sure to leave you in awe.