Melithaea is a genus of octocorals in the family Melithaeidae. Members of the genus are commonly known as fan corals and are found in the tropical Indo-Pacific region. The type species is Melithaea ochracea.^[2]

Quick Facts Melithaea, Scientific classification ...

Melithaea
Knotted fan coral, Melithaea ochracea
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Cnidaria
Class:	Octocorallia
Order:	Alcyonacea
Family:	Melithaeidae
Genus:	Melithaea Milne-Edwards, 1857 [1]
Species
See text
Synonyms[1]
Acabaria Gray, 1859 Birotulata Nutting, 1911 Clathraria Gray, 1859 Melitella Gray, 1859 Melitodes Verrill, 1864 Mopsella Gray, 1857 Pleurocoralloides Moroff, 1902 Wrightella Gray, 1870

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Members of the genus Melithaea are arborescent colonial corals forming fan, bush or tree shapes. The axis or main skeletal "trunk" is jointed, there being nodes, flexible horny joints, separated by internodes composed of hard, calcareous material. The branches divide off at the nodes which are often swollen. The minute calcareous spicules in the flexible membrane called the mesoglea that covers the skeleton are called sclerites. The identity of these spicules is important for identification purposes and in this genus they are predominantly double discs and small disc-spindles, but also include plain spindles, capstans and small clubs. Members of this genus do not have the unicellular symbiotic algae Zooxanthellae in their tissues that many other corals do. Colonies vary in colour but tend to be shades of yellow, orange, red and brown.^[2]

These corals are one of several genera of sea fan that can be hosts to a species of pygmy seahorse, the Denise's pygmy seahorse (Hippocampus denise).

The World Register of Marine Species includes the following species in the genus:^[1]