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Amphiroa (Jointed Coralline)
Amphiroa fragilissima
Plantae›Rhodophyta›Corallinophyceae›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.
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Quick Facts
- note
- will naturally appear in mature reef tanks with stable parameters
- role
- beneficial — reef maturity indicator
- calcium
- 400–450 ppm
- alkalinity
- 8–9 dKH