Long Tentacle Anemone (Macrodactyla doreensis) – XXL Size, 11′ and Above
This Long Tentacle Anemone, scientifically known as Macrodactyla doreensis, is a striking and visually impressive species ideal for reef aquariums.
Reef Compatible: Yes
Care Level: Intermediate
Disposition: Semi-aggressive
Minimum Tank Size: 30 gallons
Mature Size: 20 inches
Placement in Tank: Low
Light Level: Moderate
Water Flow: Moderate
| Feature | Detail |
|---|---|
| Species | Macrodactyla doreensis |
| Size (Mature) | Up to 20 inches |
| Minimum Tank Size | 30 gallons |
| Light Requirement | Moderate |
| Water Flow | Moderate |
| Compatibility with Reef | Yes |
| Aggression Level | Semi-aggressive |
FAQ
Is this anemone suitable for a reef tank?
Yes, this anemone is reef compatible and can coexist with other reef inhabitants.
What is the minimum tank size required for this anemone?
A minimum tank size of 30 gallons is recommended for proper growth and stability.
How much light and water flow does it need?
It requires moderate light and moderate water flow to thrive.




Lily Thomson –
The anemone arrived healthy and expanded well in my 55-gallon tank. It has beautiful long tentacles and blends well with the coral. I keep a moderate flow and provide moderate lighting. It’s semi-aggressive but not overly so, and it’s a great addition to my reef setup.
Wanda Sanderson –
Grew quickly after setup. The tentacles are long and vibrant. I noticed it gently touches nearby invertebrates, but no harm was done. Needs a stable environment with moderate flow and light. Great for intermediate reef keepers.
Tim Harris –
Installed it in a 40-gallon tank with proper lighting and flow. It has adapted well and looks stunning. The size is impressive, and it’s a focal point in the display. I appreciate the detailed care notes included.