Green Long Tentacle Anemone (Macrodactyla doreensis) – Size S
Macrodactyla doreensis, commonly known as the Green Long Tentacle Anemone, is a striking and visually appealing species suitable for reef aquariums.
Care Level: Intermediate
Reef Compatible: Yes
Disposition: Semi-aggressive
Minimum Tank Size: 30 gallons
Mature Size: 20 inches
Placement: Low
Light Level: Moderate
Water Flow: Moderate
| Feature | Detail |
|---|---|
| Size (Adult) | 2 inches to 3 inches |
| Species | Macrodactyla doreensis |
| Origin | Indo-Pacific |
| Water Temperature | 72°F to 78°F |
| Water pH | 8.1 to 8.4 |
FAQ
Is this anemone safe to keep with corals?
Yes, this anemone is reef compatible and generally does not harm most corals. However, it may interact with certain soft corals or polyps due to its semi-aggressive nature.
What is the ideal lighting and water flow for this anemone?
Moderate light levels and moderate water flow are recommended for optimal growth and health.
How long does it take for this anemone to reach maturity?
It typically takes several months to reach its mature size of 20 inches under proper conditions.

Yvonne Underwood –
The Green Long Tentacle Anemone added a lot of visual interest to my 30-gallon tank. It thrived under moderate lighting and has been stable for over six months. I appreciate its compatibility with other reef species.
Irene Blake –
It’s a beautiful addition to the tank. I noticed it extends its tentacles slowly over time. The water flow and lighting were adjusted to match its needs, and it has grown steadily.
Piers McGrath –
I’ve kept this anemone for four months now. It’s active and colorful, and it doesn’t seem to harm any of the corals I have. The only thing I had to adjust was the water flow to keep it stable.