Stichodactylidaeinvertebratesadvanced

Ritteri Anemone

Heteractis magnifica

Origin: Indo-Pacific, Red Sea

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Water Parameters

Temperature2528 °C
15 °C35 °C
pH8.18.4
49

Quick Stats

Max Size
50 cm
Min Tank
300 L
Lifespan
10-25
Schooling
No
Diet
filter feeder
Temperament
potent sting; will sting and kill adjacent corals; tends to wander in new tanks; needs pristine water and intense light; host to Amphiprion species

About

Heteractis magnifica (Magnificent or Ritteri Anemone) is the largest and most spectacular host anemone available, with an oral disc that can exceed 50 cm in diameter covered in a dense carpet of thick, club-tipped tentacles. The natural host of True Percula Clownfish, it is prized for producing stunning clownfish-anemone symbiosis displays. Its demanding requirements — pristine water, intense lighting, and strong flow — make it a species best suited to experienced reef aquarists.

Care Guide

Minimum 300 L mature reef with intense lighting (400+ PAR at base) and strong flow. pH 8.1–8.4, salinity 1.023–1.025, temperature 25–28°C. Feed meaty foods (silversides, mysis, clams) 1–2× weekly. Tends to wander in new tanks, stinging corals — fix position with rubble or let it settle in open sand. Very sensitive to parameter changes and low pH. Long-term commitment — lives for decades.

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