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Sarasvati Anemone Shrimp

Ancylomenes sarasvati

The Sarasvati Anemone Shrimp is a beautiful cleaner shrimp that associates with anemones. Perfect for nano tanks, it provides cleaning services and displays fascinating symbiotic behaviors.

Taxonomy
Class:Malacostraca
Order:Decapoda
Family:Palaemonidae
Genus:Ancylomenes
Species:Ancylomenes sarasvati

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Water Temperature

22 - 28 °C

pH Value

8.1 - 8.4

Water type

Marine

Invertebrate type

Marine shrimp

Adult size

2.5 cm

Minimum group

>= 1

KH

8 - 12 dKH

Ecological role

Symbiont

Species description

Geographical Origin and Habitat: Ancylomenes sarasvati, commonly known as the Sarasvati Anemone Shrimp, is native to the tropical waters of the Indo-West Pacific. Its presence is well-documented in Indonesia (particularly Bali and Sulawesi), Thailand, the Philippines, and north to the Ryukyu Islands of southern Japan. It inhabits sheltered coral reefs at depths between 5 and 25 meters, establishing obligate or facultative symbiotic relationships with various cnidarians, such as large sea anemones (Stichodactyla doreensis, Heteractis aurora) and large-polyp stony corals (Heliofungia actiniformis).
Taxonomy: This species belongs to the class Malacostraca, order Decapoda, family Palaemonidae, and genus Ancylomenes. Until recently, it was classified within the genus Periclimenes before being moved to Ancylomenes following phylogenetic revisions based on specific morphological characteristics. It is named after Sarasvati, the Hindu goddess of knowledge, music, and the arts, due to its graceful movements and beautiful color patterns.
Social Behavior: It is a peaceful and highly cooperative species, best known for its activity as a cleaner shrimp. It establishes 'cleaning stations' on its host or adjacent live rocks, swaying rhythmically and waving its long white antennae to signal passing fish and invite them to approach for parasite removal. It can live solitary, in male-female pairs, or in small groups on a single host.
Coloration and Sexual Dimorphism: The body is remarkably transparent, rendering it nearly invisible to predators. This transparency is accented by elegant, high-contrast patterns: a series of purple and white bands covers the dorsal side of the abdomen, carapace, and legs. A distinctive white and purple saddle-like marking is located on the upper part of the third abdominal segment. Females are significantly larger than adult males and can be easily identified when carrying clusters of colorful eggs under their abdomen.

Care, breeding and tankmates

Tank Setup: Requires a mature marine aquarium of at least 30-50 liters. To maximize its chances of survival and encourage natural behavior, it is strongly advised to introduce a suitable host anemone or coral before adding the shrimp. All powerheads and wavemakers in the tank must be fitted with intake guards to prevent the shrimp or its host cnidarian from being shredded by the impellers. The rockwork should be stable and offer sheltered zones.
Diet and Feeding: Omnivorous. It feeds on coral mucus, skin parasites of host fish, and leftover fish food trapped in the anemone's tentacles. In an aquarium, supplement its diet by target-feeding liquid coral foods, small frozen crustaceans (baby brine shrimp, cyclops, finely chopped mysis), or micronized dry foods for invertebrates two or three times a week near its host.
Water Quality: Requires pristine and stable chemical and physical parameters typical of tropical coral reefs: temperature between 24°C and 28°C, pH 8.1-8.4, and a stable specific gravity of 1.023-1.026. Nitrogen compounds (ammonia and nitrite) must be completely undetectable. Like all marine decapods, it requires adequate dissolved iodine levels to support the periodic molting process. Copper-based medications are highly lethal.
Compatibility and Tankmates: 100% reef-safe and harmless to corals. Coexists peacefully with clownfish and other small, peaceful marine fish. It must not be housed with predatory or aggressive species that might view it as prey, such as puffers, triggerfish, hawkfish, large wrasses, groupers, or scorpionfish. It is compatible with other peaceful shrimp in the tank.
Aquarium Breeding: Breeding in captivity is complex and uncommon. Although eggs are easily fertilized and incubated by the female under her abdominal pleopods, the pelagic larvae require microscopic feeding and specialized rearing tanks without mechanical filters that would cause immediate death by suction.
Risks and Diseases: The greatest biological risk is the lack of a symbiotic host (anemone or coral), which exposes the shrimp to high stress and predation. Further threats come from complications during the molting process due to water chemistry or nutritional deficiencies, and accidental exposure to trace heavy metals or medications incompatible with invertebrates.

Geographic Origin and Distribution

Ancylomenes sarasvati, commonly known as the Sarasvati Anemone Shrimp, is native to the tropical waters of the Indo-West Pacific. Its presence is well-documented in Indonesia (particularly Bali and Sulawesi), Thailand, the Philippines, and north to the Ryukyu Islands of southern Japan. It inhabits sheltered coral reefs at depths between 5 and 25 meters, establishing obligate or facultative symbiotic relationships with various cnidarians, such as large sea anemones (Stichodactyla doreensis, Heteractis aurora) and large-polyp stony corals (Heliofungia actiniformis).

Origin

Tropical oceans and reefsSouth and Southeast AsiaEast Asia

Invertebrate profile

Diet
Omnivore
As a omnivore/commensal, Ancylomenes sarasvati plays an active role in consuming various organic matters in its environment. Its diet in captivity should be varied, including specialized pellets, frozen foods, and natural algae or detritus depending on its specific preferences. Regular and balanced feeding is crucial for its health and longevity.
Ecological role
Symbiont
The primary ecological role of Ancylomenes sarasvati is acting as a symbiotic within the aquarium ecosystem. By constantly foraging, it helps manage waste, uneaten food, or pests, contributing significantly to water quality. Its presence introduces a natural balance and mimics complex biological interactions found in the wild.
Shock sensitivity
High
Ancylomenes sarasvati is quite sensitive to sudden shifts in water parameters, particularly salinity, temperature, and pH. It is highly recommended to use a slow drip acclimation method over several hours when introducing it to a new tank. Maintaining stable conditions is vital to prevent stress-induced ailments or mortality.
Calcium and minerals
Medium
To support healthy molting and exoskeleton growth, Ancylomenes sarasvati requires adequate calcium and trace elements like iodine in the water. Regular water changes with a high-quality salt mix usually provide sufficient levels, but specific supplementation may be necessary in heavily stocked reef tanks. Monitoring calcium and alkalinity ensures proper skeletal development.
Molting
Yes
During the molting process, Ancylomenes sarasvati becomes extremely vulnerable to predators and aggressive tankmates. It will typically retreat to a secure hiding spot until its new exoskeleton hardens. It is important to leave the discarded molt in the tank, as the invertebrate will often consume it to reclaim valuable minerals.
Reproduction
Oviparous
Breeding Ancylomenes sarasvati in a home aquarium is incredibly challenging due to its complex reproductive cycle. It typically involves a planktonic larval stage that requires highly specialized foods and precise water conditions to survive. In most standard setups, any spawned larvae will quickly become food for fish and corals.
Compatibility & tankmates
Peaceful
When considering tankmates, Ancylomenes sarasvati is generally compatible with peaceful fish and other similarly sized invertebrates. Since its reef compatibility is rated as 'yes', careful observation is required if kept with delicate corals or smaller ornamental shrimp. Aggressive or large predatory fish should always be avoided to ensure its safety.

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

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Last updated: 06/30/2026
Sarasvati Anemone Shrimp (Ancylomenes sarasvati) Care Guide & Tank Setup | Atlarium