About this condition
A cotton-wool-like fungal growth commonly seen on damaged skin or eggs.
What is Saprolegnia?
Often secondary to injury or stress.
A cotton-wool-like fungal growth commonly seen on damaged skin or eggs.
Category
Fungal
Helps you quickly understand whether this is a parasite, viral issue, water quality problem or wider management topic.
Severity
🟡 Medium risk
Use alongside EA guidance and your own fishery rules to decide next steps.
Notifiable?
No – but still monitor closely
Always follow the latest EA advice on notifiable fish diseases.
Linked species
No specific species linked
Used to surface this guidance directly inside the Clubnest Species Guide.
A cotton-wool-like fungal growth commonly seen on damaged skin or eggs.
Often secondary to injury or stress.
If you suspect this condition, see unusual fish behaviour, or witness a pollution incident at your waters, you must contact the Environment Agency immediately. Quick reporting protects your fishery and prevents further fish mortalities.
EA Incident Hotline
0800 80 70 60
24 hours · Free to call
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