No photo yet
Sign in to submit the first photo
Dictyota
Dictyota sp.
Chromista›Ochrophyta›Phaeophyceae›Dictyotaceae
📍 Worldwide in tropical and subtropical seas
Flat, iridescent brown-olive blades that spread over rockwork and corals. Beautiful under certain lighting — shimmers blue-green — but highly invasive in reef tanks. Produces chemical deterrents that most fish avoid. Very difficult to eliminate; manual removal stimulates regrowth. Sea urchins (Diadema) and Thalassoma wrasses occasionally graze it.
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 Dictyota 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
- role
- nuisance — persistent
- cause
- high nutrients, low herbivore pressure
- control
- Diadema urchin, manual removal, reduce nutrients
- warning
- extremely difficult to eradicate once established; chemical deterrents repel most fish
Water it likes
- ph
- 8.1–8.4
- hardness
- 8–12 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Not legal advice, and possibly incomplete or out of date.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.