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Zoanthids

Zoanthus sp.Lamarck, 1801Genus

Perfect entry-level soft coral with incredible color variety. Tolerant of water quality fluctuations and easy to propagate.

Zoanthids (Zoanthus sp.)
© Albert KokPublic domainSource

Fluorescence appearance

Zoanthids under white light
Under white light
Zoanthids under blue light (fluorescence)
Under blue light (fluorescence)※AI-rendered image

Coral fluorescent proteins are excited by blue/actinic light. Appearance differs greatly from under white light.

Names & Synonyms

  • CommonZoanthids
  • Commonマメスナギンチャク(ゾアンサス)

Overview

Zoanthids (order Zoantharia) are colonial hexacorals found across tropical and subtropical coral reefs of the Indo-Pacific and Atlantic. Their polyps, measuring 5–20 mm in diameter, display a remarkable spectrum of fluorescent colors—green, blue, red, yellow, and purple—earning them the nickname "gems of the sea." They thrive under moderate LED lighting (100–200 PAR) with gentle to moderate flow, making them highly accessible to beginners while remaining endlessly collectible for experienced hobbyists. Propagation via fragging is straightforward. Some species contain palytoxin, so handling with bare hands should be avoided.

Care Specifications

Temperature24〜27℃
Specific gravity1.023〜1.025
Salinity33〜35 ppt
KH (carbonate hardness)8〜12 dKH
LightingMedium
Water flowMedium
PlacementMiddle

Care Points

  • LightingModerate LED lighting sufficient
  • FlowLow to moderate
  • Water QualityKH 7-11, Ca 400-450ppm
  • NotesSome species contain palytoxin — handle with care

Regulatory & Conservation

Notes:
スナギンチャク目(Zoanthus, Zoantharia=マメスナ/ゾアンサス)。イシサンゴ目でない→CITES 非掲載。日本法も非該当。

Sources

Related care articles

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