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Hair Algae
Oedogonium sp.
Also known as Filamentous Algae
Plantae›Chlorophyta›Chlorophyceae›Oedogoniales›Oedogoniaceae
📍 Worldwide in freshwater
Fine, bright-green strands that drape over plants and hardscape. One of the most common new-tank algae — usually caused by excess light, nutrient imbalance, or lack of fast-growing plants competing for nutrients. Nerite snails, Amano shrimp, and Florida Flagfish make short work of it.
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Quick Facts
- role
- nuisance
- cause
- excess light, nutrient imbalance
- control
- reduce photoperiod, Amano shrimp, Florida Flagfish, add stem plants
Water it likes
- ph
- 6.5–7.5
- hardness
- 5–15 dGH
- temperature
- 64–79°F (18–26°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Not legal advice, and possibly incomplete or out of date.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.