No photo yet
Sign in to submit the first photo
Amphiroa (Jointed Coralline)
Amphiroa fragilissima
Plantae›Rhodophyta›Corallinophyceae›Corallinales›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.
Community Photos
0 photosPhotos are added when members log a tank with this species and upload a photo in their tank journal. Add your own tank to contribute.
No photos yet — add a tank with Amphiroa (Jointed Coralline) to be the first!
Sign in to vote.
Tips from the community 💡
0 tipsReal experiences, care advice, and keeper notes. Finn learns from these too.
Sign in to share your experience.
No community tips yet — be the first to share your knowledge!
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
Water it likes
- ph
- 8.1–8.4
- hardness
- 8–18 dGH
- temperature
- 72–81°F (22–27°C)
Legality
No state or federal restrictions on record for this species.
Not legal advice, and possibly incomplete or out of date. Rules vary by state and locality and change over time — always confirm the current regulations with your state wildlife or agriculture agency before buying, keeping, or shipping this species.