Green Long Tentacle Anemone (Macrodactyla doreensis) – Size M
Macrodactyla doreensis, commonly known as the Green Long Tentacle Anemone, is a striking and visually engaging species suitable for reef aquariums.
Care Details:
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
| Parameter | Value |
|---|---|
| Species | Macrodactyla doreensis |
| Size (Adult) | 20 inches |
| Recommended Tank Size | 30 gallons |
| Light Requirement | Moderate |
| Water Flow | Moderate |
| Compatibility | Reef compatible |
| Behavior | Semi-aggressive |
FAQ
Is the Green Long Tentacle Anemone safe to keep with corals?
Yes, this anemone is reef compatible and can coexist with most coral species when properly maintained.
What is the expected growth rate of this anemone?
The anemone grows slowly to reach a mature size of 20 inches over several months under stable conditions.
Does it require special water parameters?
It thrives in moderate light and moderate water flow with stable water parameters typical of a reef aquarium.

Donna Grant –
The anemone has grown well in my 30-gallon tank. It’s colorful and adds a lot of visual interest. I’ve noticed it gently interacts with nearby polyps without causing damage. Light and flow are set to moderate, which matches the requirements. It’s a great addition to a reef setup.
Justin Ross –
I’ve had this anemone for about three months. It’s active and maintains its vibrant green color. I keep it in a low area of the tank, which works well. It’s semi-aggressive, so I make sure to monitor its behavior around other invertebrates.
Matt Mitchell –
The anemone has been stable and healthy since arrival. It responds well to moderate lighting and water flow. I appreciate the clear care instructions provided. It’s a solid choice for intermediate reef keepers.