
Anemones, mushrooms, and zoanthids
Mertens' anemone
Stichodactyla mertensii
Photo: Scott Mills · CC BY-SA 2.5 · Wikimedia Commons
Key facts
- Temperature24–27 °C
- pH8.1–8.4
- Adult size100 cm
- Difficulty★★★★★
- WaterMarine
- Reef safeNo
Full profile
- Type
- Anemone
- Family
- Stichodactylidae
- Origin
- Indo-Pacific
- Size
- 50 – 100 cm
- Temperature
- 24 – 27°C
- pH
- 8.1 – 8.4
- Salinity
- 1.024 – 1.026
- Ca / KH / Mg
- marine standard
- Difficulty
- ★★★★★
- Light
- high
- Current
- medium
- Aggressiveness
- very high
- Feeding
- photosynthesis; direct feeding
- Reef Safe
- ❌ No
Notes: The largest anemone on the reef; it can grow to over one meter. Suitable only for very large, dedicated aquariums.





