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Jania
Jania rubens
Also known as Japan Blue, Japan Blue Endler's Livebearer
Plantae›Rhodophyta›Corallinophyceae›Corallinales›Corallinaceae
📍 Mediterranean and Eastern Atlantic
Feathery, pinkish-white tufts of jointed calcified branches — a beautiful encrusting coralline relative that forms soft mats on rockwork. Provides habitat for tiny amphipods and copepods. A common and welcome hitchhiker on Mediterranean and Atlantic live rock. Tolerates cooler water than most corallines.
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Quick Facts
- note
- common hitchhiker on live rock; indicates stable calcium and alkalinity
- role
- beneficial — habitat and reef health
Water it likes
- ph
- 7.8–8.3
- hardness
- 8–18 dGH
- temperature
- 64–75°F (18–24°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Not legal advice, and possibly incomplete or out of date.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.