About this condition
Large parasitic worms often found in cod and related species.
What is Cod Worm?
Visible in fillets, not harmful to anglers.
Large parasitic worms often found in cod and related species.
Category
Parasite
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.
Large parasitic worms often found in cod and related species.
Visible in fillets, not harmful to anglers.
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.
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