Ultra Green Long Tentacle Anemone - Macrodactyla doreensis
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The Green Long Tentacle Anemone (Macrodactyla doreensis) features striking long green tentacles that sway elegantly in the water, adding dynamic movement and a bold splash of color to your reef. This anemone is a standout choice for aquarists looking for a lively centerpiece.
Long Tentacle Anemones are elegant, large anemones known for their flowing, elongated tentacles and ability to host clownfish. With colors ranging from tan and brown to vibrant green, purple, and rose hues, they add movement and natural symbiosis to reef aquariums. Long Tentacle Anemones are moderately demanding, making them best suited for aquarists with some experience keeping photosynthetic anemones.
Description:
Common Names: Long Tentacle Anemone, Corkscrew Anemone, Sand Anemone
Scientific Name: Macrodactyla doreensis
Family: Actiniidae
Temperament: Semi-aggressive (stings nearby corals and invertebrates)
Difficulty: Moderate
Native Habitat & Distribution:
Long Tentacle Anemones are found throughout the Indo-Pacific, inhabiting sandy reef zones and lagoons where they bury their base into the substrate for stability.
Aquarium Care & Setup:
Temperature: 74–82°F (23–28°C)
pH: 8.1–8.4
Salinity: 1.024–1.026
Flow: Moderate, gentle movement that allows tentacles to sway without stress
Lighting: Moderate to high (150–250 PAR), depending on color morph
Placement: In sandy substrate at the base of rockwork, allowing the foot to bury securely
Care Tips & Feeding:
• Feeding: Primarily photosynthetic but benefit from weekly feedings of mysis shrimp, krill, silversides, or chopped seafood
• Growth Pattern: Expands tentacles outward from a buried base, reaching up to 12–18 inches in diameter when mature
• Tankmates: Compatible with clownfish and peaceful reef fish; avoid aggressive corals and invertebrates that may sting or be stung
• Behavior: May wander until it finds a secure sandy location to bury its foot; requires stable water conditions
Are Long Tentacle Anemones easy to keep?
They are moderately difficult, requiring stable water conditions, proper lighting, and sandy substrate for attachment.
What lighting do Long Tentacle Anemones need?
Moderate to high lighting (150–250 PAR) is ideal for maintaining health and coloration.
Do Long Tentacle Anemones need feeding?
Yes, they are photosynthetic but benefit from weekly feedings of meaty foods like mysis or chopped seafood.
Where should I place a Long Tentacle Anemone in my tank?
In sandy substrate near rockwork, where it can bury its foot securely.
How fast do Long Tentacle Anemones grow?
They grow steadily, expanding up to 12–18 inches across under proper care.
Are Long Tentacle Anemones aggressive?
Yes, they are semi-aggressive and can sting nearby corals or invertebrates, so they need space.