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Dragon's Tongue
Halymenia sp.
Family: Halymeniaceae
📍 Indo-Pacific and Caribbean shallow reefs
Brilliant scarlet-red, blade-shaped macroalgae — one of the most visually striking species for display refugia. Provides excellent colour contrast and nutrient export. More delicate than Chaeto; requires moderate flow and consistent light. Popular with collectors and stunning under reef lighting.
Keeping this species
- flow
- gentle to moderate
- note
- sensitive to high nitrates — keep below 10 ppm
- role
- beneficial — display / refugium
- lightLevel
- medium
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Natural Habitat Temperature
77°F — 81°F seasonal range · (Jan low, May high)