Dendronephthya klunzingeri (Carnation Coral): Propagation Guide

An honest propagation overview of the azooxanthellate carnation coral Dendronephthya klunzingeri, why captive propagation almost never succeeds, and its wild reproductive biology.

Overview

Dendronephthya klunzingeri is a soft coral in the family Nephtheidae, a group that includes the so-called carnation, tree and broccoli corals. The genus Dendronephthya was established by Kukenthal in 1905 and contains over 250 described species occurring across tropical and subtropical seas, including the Red Sea and the wider Indo-Pacific. Colonies are tree-like and brightly coloured, in reds, pinks, yellows and purples.

These corals are azooxanthellate: they lack the symbiotic algae found in most reef corals and cannot photosynthesise. As Wikipedia notes, they are notoriously difficult to keep, requiring a near constant supply of small foods such as phytoplankton, which makes deliberate propagation an uncommon and largely unrealised goal in home aquaria.

Reproductive Mode

Like other octocorals in the family Nephtheidae, Dendronephthya reproduces sexually in the wild, with polyps emerging at night to feed. The available whitelisted sources do not document a specific, reliable asexual fragmentation method for this genus in captivity, so claims of routine home propagation should be treated with caution.

Fragging / Asexual Propagation

There is no established, source-documented protocol for fragging Dendronephthya klunzingeri at home. Because the colonies are notoriously difficult to keep alive and depend on a continuous food supply, even an undamaged colony commonly fails to thrive, and cut tissue is unlikely to recover. Honest practice is to regard this species as effectively not propagated in captivity rather than to follow a speculative how-to.

Feeding & Conditions for Propagation

Any attempt to sustain or grow this coral depends entirely on feeding. Reef Builders describes non-photosynthetic corals as needing varied particle sizes, from tiny phytoplankton through rotifers and copepods, delivered daily and several times per day, together with strong current comparable to that used on a stony-coral tank. Without this regime the colony cannot accumulate the energy needed for tissue growth or recovery.