Purple Heteractis Magnifica Anemone

The Heteractis magnifica, commonly called the Magnificent Sea Anemone, lives up to its name with a striking display of flowing tentacles and vibrant coloration. Found in shallow reef environments across the Indo-Pacific, this species is a true centrepiece for advanced reef aquarists seeking to host clownfish in a natural symbiotic environment.

In the home aquarium, H. magnifica demands attention—and specific care. It can grow quite large (up to 1 metre across in the wild), so it needs a spacious, mature tank of at least 300 litres, with excellent lighting (metal halide, strong LED, or T5s) and stable water parameters. This anemone thrives in intense light and moderate to strong water flow, often positioning itself on rocks or the highest points of the aquascape where it can stretch toward the light.

Magnifica anemones are known to be mobile, especially when first introduced or if conditions are not ideal. Careful placement and protection from powerheads or overflows is essential to avoid injury or damage to other corals during its wandering phase.

They are photosynthetic, thanks to the symbiotic zooxanthellae in their tissues, but they also benefit from regular feedings of finely chopped seafoods like shrimp, mysis, or fish, especially when newly introduced or during recovery.

While stunning, H. magnifica is best suited for experienced aquarists, as it is highly sensitive to changes in water chemistry and flow. It should not be placed in tanks with poor lighting conditions. However, when well cared for, it will reward its keeper with an incredible display of waving tentacles and a natural host environment for several species of clownfish, including Amphiprion percula, A. ocellaris, and A. clarkii.

Quick Care Guide

Tank Size: 300L minimum

Lighting: High (metal halide, LED, or T5)

Flow: Moderate to strong

Placement: Rockwork, high in the tank

Feeding: Occasional, with meaty marine foods

Difficulty: Moderate

A true showstopper, the Heteractis magnifica offers unmatched movement, color, and clownfish hosting behaviour for the dedicated reef aquarist.

Size: XL - Approx 35cm across