There are no data on mating systems in Heteractis magnifica.
Mating System: polygynandrous (promiscuous)
Heteractis magnifca can reproduce sexually or asexually. In sexual reproduction, the male releases his sperm first to stimulate the female to release her eggs. This external fertilization leads to the development of a ciliated planula larvae. Asexual reproduction can occur by budding, binary fission, or pedal laceration (when part of the pedal disc breaks off to form a new anemone). Most asexual reproduction occurs in the winter. The presence of the symbiotic clown fish Amphiprion chrysopterus can increase the amount of asexual reproduction and general growth. Anemones found with two A. chrysopterus species had faster fission rates than those without this symbiotic species.
Breeding interval: It is not known how often H. magnifica breeds.
Breeding season: H. magnifica reproduces asexually more frequently in the winter.
Key Reproductive Features: iteroparous ; year-round breeding ; sexual ; asexual ; fertilization (External ); broadcast (group) spawning
There is no parental involvement in the sexual or asexual reproduction process.
Parental Investment: pre-fertilization (Provisioning)