Swan Mussels (Anodonta cygnea) 

Overview

Swan Mussels are natural pond filters, helping maintain clear, healthy water by filtering algae, suspended particles and organic waste. They are peaceful, hardy, and ideal for wildlife ponds, ornamental ponds and natural filtration systems.

These are large, mature mussels, fully conditioned and ready for introduction into established ponds.

Key Features

• Natural water filtration — each mussel filters up to 40–60 litres per day
• Helps reduce green water, suspended waste and algae
• Safe with fish, plants and wildlife
• Long‑lived, hardy freshwater species
• Excellent for ecological balance in wildlife ponds

How Many Swan Mussels Do You Need?

(Assuming a healthy, established pond with good oxygen levels)

• Small ponds (500–2,000 litres)
  2–3 mussels
  Provides gentle natural filtration without overstocking.
• Medium ponds (2,000–6,000 litres)
  4–6 mussels
  Ideal for noticeable clarity improvement and ecological balance.
• Large ponds (6,000–15,000 litres+)
  8–12 mussels
  Supports strong natural filtration and sediment reduction.
• Very large ponds / wildlife lakes
  15+ mussels, depending on stocking and water movement.

Care Requirements

• Place in still or slow‑moving water
• Needs fine sediment to bury into
• Avoid strong pumps or high‑flow zones
• Introduce only to mature ponds (minimum 1 year old)
• Do not keep with large koi that may disturb them

What You Receive

• Healthy, mature Swan Mussels
• Size: 8–12cm
• Packed in oxygenated bags for safe transport
• Fully acclimatised and ready for introduction