A small intertidal anemone that forms dense clonal patches; symbiotic algae contribute energy. Northeast Pacific, Alaska to Baja California; intertidal to approximately 18 m.
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Responsible care profile
Natural-history records, reported aquarium practice and experimentally established limits are distinct. Numeric recommendations are provided only where their source and scope are identified.
Identity, safeguards and related care references have been reviewed. Genus examples or incomplete species-specific husbandry evidence do not establish exact aquarium limits; read the scope note before stocking.
2 referenced sourcesCare information requiring follow-up
The following required fields still need source verification. Their absence is not a confirmed care recommendation.
- Feeding / nutrition schedule
- Temperature
- Salinity / specific gravity
- pH
- Care level
- Advanced
- Minimum volume
- Not specified in current guidance
- Preferred volume
- Not specified in current guidance
- Adult size
- 3.5 in (8.9 cm)
- Reef compatibility
- Reef-Safe with Caution
- Temperament
- Aggressive; stinging tentacles can injure nearby animals.
- Social plan
- Not specified
Water
- Temperature
- Not specified in the profile guidance
No source-backed numeric aquarium operating ranges identified; natural habitat is not a husbandry prescription.
Habitat
Northeast Pacific, Alaska to Baja California; intertidal to approximately 18 m.
Feeding
Captures copepods, amphipods and other small animals; also receives energy from algal symbionts. · Not established by the inspected species references; establish a supported feeding schedule and verify actual consumption before acquisition. · Captures copepods, amphipods and other small animals; also receives energy from algal symbionts.
Compatibility
Specialist temperate-water aquarium candidate requiring a dedicated system matched to its collection locality, not a tropical reef tank. Public exhibit evidence establishes captive display but does not establish home system operating limits. Temperature, salinity, pH, feeding frequency and minimum volume remain source gaps; a chilled-system protocol should be established before selection.
What the evidence establishes
Species identity, source-scoped natural history, aquarium suitability and image permission reviewed.
- Taxonomic identity
- Source-identified photographs
- Feeding ecology and practical limits
No source-backed numeric aquarium operating ranges identified; natural habitat is not a husbandry prescription.
Acclimation and quarantine
Confirm species identity and the source animal’s established holding conditions. Arrange a suitable permanent system and qualified transfer plan before acquisition.
Stocking safeguards
Aquarium setting: Home aquarium. Starvation risk: Not established.
Specialist temperate-water aquarium candidate requiring a dedicated system matched to its collection locality, not a tropical reef tank. Public exhibit evidence establishes captive display but does not establish home system operating limits. Temperature, salinity, pH, feeding frequency and minimum volume remain source gaps; a chilled-system protocol should be established before selection.
- Specialist temperate-water aquarium candidate requiring a dedicated system matched to its collection locality, not a tropical reef tank. Public exhibit evidence establishes captive display but does not establish home system operating limits. Temperature, salinity, pH, feeding frequency and minimum volume remain source gaps; a chilled-system protocol should be established before selection.
Special risks
- Specialist temperate-water aquarium candidate requiring a dedicated system matched to its collection locality, not a tropical reef tank. Public exhibit evidence establishes captive display but does not establish home system operating limits. Temperature, salinity, pH, feeding frequency and minimum volume remain source gaps; a chilled-system protocol should be established before selection.
Husbandry Findings and Limits
These findings explain what the cited evidence supports. Facility precautions are identified separately from tested captive outcomes.
Observed husbandry and limits — Documented keeping guidance; not a controlled trial
Specialist temperate-water aquarium candidate requiring a dedicated system matched to its collection locality, not a tropical reef tank. Public exhibit evidence establishes captive display but does not establish home system operating limits. Temperature, salinity, pH, feeding frequency and minimum volume remain source gaps; a chilled-system protocol should be established before selection.
Scope and remaining limit: The linked references support the stated observations and safeguards; they do not establish a universal lifetime ration, minimum volume or full physiological tolerance.
Sources: Species natural history · WoRMS taxonomyFeeding and food access — Documented keeping guidance; not a controlled trial
Captures copepods, amphipods and other small animals; also receives energy from algal symbionts.
Scope and remaining limit: Food type and capture method do not establish a complete measured lifetime ration. Monitor actual feeding and condition.
Sources: Species natural history · WoRMS taxonomyIdentification
A small intertidal anemone that forms dense clonal patches; symbiotic algae contribute energy.
Adult Size and Measurement
Reported adult reference: 3.5 in (8.9 cm), measured as maximum crown diameter.
Distribution and Habitat
Northeast Pacific, Alaska to Baja California; intertidal to approximately 18 m.
Feeding and Ecological Role
Captures copepods, amphipods and other small animals; also receives energy from algal symbionts.
Aquarium Husbandry and Limits
Specialist temperate-water aquarium candidate requiring a dedicated system matched to its collection locality, not a tropical reef tank. Public exhibit evidence establishes captive display but does not establish home system operating limits. Temperature, salinity, pH, feeding frequency and minimum volume remain source gaps; a chilled-system protocol should be established before selection.
Reproduction
Sexual spawning and asexual splitting produce new individuals.
Aggregating anemone in Canada
Pacific Canada: Documented Canadian marine occurrence. Listed BC occurrence, reviewed by anemone taxonomist Daphne Fautin. Reviewed occurrences are a supported subset of the range; photographs may have been taken elsewhere.
- Canadian regions
- Pacific Canada
- Canadian status
- Canadian occurrence reviewed; Canadian conservation status not reassessed in this update.
A living record
Added from the missing-invertebrate audit. No occurrence polygon or captive lifetime success rate inferred. Public content last reviewed October 18, 2026.
- Species natural history ↗Reference source
- WoRMS taxonomy ↗Reference source
- Royal BC Museum / UBC sea anemone checklist ↗Reference source