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Amphiroa (Jointed Coralline)
Amphiroa fragilissima
Family: Corallinaceae
📍 Worldwide in tropical and subtropical reefs
Delicate, jointed branching coralline algae with alternating calcified segments and flexible joints — looks like tiny white-pink antlers. Forms low tufts on rockwork. A living indicator of good calcium and alkalinity levels. Grazed by urchins but otherwise grows without intervention in a mature reef.
Keeping this species
- note
- will naturally appear in mature reef tanks with stable parameters
- role
- beneficial — reef maturity indicator
- calcium
- 400–450 ppm
- alkalinity
- 8–9 dKH
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Natural Habitat Temperature
77°F — 81°F seasonal range · (Jan low, May high)