Common name: Beadlet anemone

Scientific name: Actinia equina (Linnaeus, 1758)
Closeup shot of a beadlet anemone (Actinia equina) underwater
Sea life, several beadlet anemones, Actinia equina, underwater on a rock in the Mediterranean sea, Cote d'Azur, FranceBeadlet Anemone - Actinia equina, Mediterraean sea, Croatia. Underwater photography. Sea anemone.

General information

The Beadlet Anemone, Actinia equina, is a common sea anemone found along the rocky shores of the Atlantic Ocean and the Mediterranean Sea. This species is known for its robust nature and ability to tolerate a range of environmental conditions, making it a suitable candidate for the marine aquarium hobby. The Beadlet Anemone is characterized by its bright red to dark green coloration and distinctive blue beads, or acrorhagi, around its mouth, which are used in defense and territorial disputes.

Details

Recommended minimum tank volume
40 liter (11 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
16 to 26 °C (61 to 79 °F)
Acidity
pH 7.8 to 8.4
Average size
10 cm (4″)
Care level
Moderate to easy
Diet
Carnivore
Reefsafe
Yes
Aggression
Semi aggresive May sting nearby corals
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Cnidarians
    Cnidaria
  3. Class
    Anthozoans
    Anthozoa
  4. Order
    Sea Anemones
    Actiniaria
  5. Family
    Sea Anemones
    Actiniidae
  6. Genus
    Beadlet Anemone
    Actinia
  7. Species
    Beadlet anemone
    Actinia equina (Linnaeus, 1758)
  8. Synonyms
    Actinia cerasum Dalyell, 1848
    Actinia chiococca Cocks in Johnston, 1847
    Actinia corallina Risso, 1826
    Actinia equina mesembryanthemum Linn.
    Actinia equina chiococca Andr.
    Actinia hemisphaerica Pennant, 1777
    Actinia hemispherica Pennant, 1777
    Actinia margaritifera Templeton, 1836
    Actinia mesembryanthemum Ellis & Solander, 1786
    Actinia purpurea Cuvier, 1798
    Priapus equinus L.
    Priapus ruber Forsskål, 1775

Care

Beadlet Anemones are relatively easy to care for in captivity. They require a stable marine aquarium with moderate lighting and water movement. It's important to provide them with a rocky substrate or crevices where they can attach their base. They can feed on a variety of meaty foods such as chopped fish, mussels, or shrimp, and benefit from regular feedings.

Reproduction

In the wild, Actinia equina can reproduce both sexually and asexually. Sexual reproduction occurs through the release of gametes into the water column, while asexual reproduction happens through a process called pedal laceration, where new anemones form from pieces of the parent's pedal disc. In the aquarium, asexual reproduction is more commonly observed, leading to the proliferation of clones.

Symbiosis

While the Beadlet Anemone does not have a well-known symbiotic relationship with fish like clownfish, it can host a variety of small invertebrates and provide shelter to them. Its stinging cells offer protection to these creatures from potential predators.

Habitat

Actinia equina is typically found in intertidal zones, often in rock pools and on rocky substrates where it can withstand the changing tides. It is a hardy species that can cope with variations in temperature and salinity, which is reflected in its wide distribution along the coasts of Europe and parts of Africa.