Mussels | Why the mussel, like the freshwater mussel, is an asset to the pond
Mussels, you have them in different varieties, namely; the freshwater mussel, also called pond mussel and the saltwater mussel. Mussels are purchased for different purposes: the freshwater mussel to put out in the pond so it can purify the water and the saltwater mussel to eat.
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All about the freshwater mussel
- What are freshwater mussels?
- How and where should mussels be placed in the pond?
- What should I pay attention to when keeping mussels?
- What pond plants are suitable for a pond with freshwater mussels?
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What are freshwater mussels?
Pond mussels are small, freshwater mussels found in all kinds of types of ponds and lakes. They are filter feeders and feed on small particles in the water, such as plankton and bacteria. They also feed on algae, naturally filtering pond water. One mussel can purify up to five gallons per hour! They also absorb nitrate and nitrite, reducing the algae growth in the water is inhibited. They are important for biodiversity, as they serve as food for various species, such as pond fish and waterfowl. However, pond mussels are also sensitive to pollution and changes in water quality, which can threaten their survival.
How and where should mussels be placed in the pond?
This mussel occurs naturally in the silt at the bottom of the water. In the pond, they will also like to burrow into soil, silt or pond substrate. If these materials are not available, the mussels themselves will find a suitable place in your pond. It is also possible to hang some of the mussels in nets. Floating algae are usually located in the upper 30-40 cm of the water, so this is convenient. Hanging the mussels in nets also prevents large fish such as Koi from accessing them.
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What pond plants are suitable for a pond with freshwater mussels?
Pond plants can play an important role in keeping freshwater mussels in the pond. These plants provide shelter and food for the mussels and can help purify the water. Here are some types of pond plants suitable for growing mussels:
- Water Lilies: Water lilies are a popular choice for ponds because of their beautiful flowers and green leaves. They also provide an ideal hiding place for mussels and provide protection from predators.
- Floating Plants: Floating plants float on the surface of the water and provide a good hiding place for clams. These plants also absorb nutrients and excess nutrients in the water, helping to maintain a healthy ecosystem.
- Oxygen plants such as waterweed and hornwort, provide a suitable environment for mussels to attach to. These plants also provide additional oxygen to the water and reduce the likelihood of algae growth.
- Marsh plants: Marsh plants, such as calamus, grow in shallow water and provide a sheltered environment for mussels. These plants can also help purify water and filter toxins.
It is important to ensure that pond plants remain healthy through regular maintenance, such as trimming dead leaves and branches and removing excess plant debris. Choosing the right pond plants creates an ideal environment for freshwater mussels to thrive.
Aquatic plants as shelter and food for mussels
aquatic plants give your freshwater mussels in the pond a place to hide, this is important for the mussel to feel at home in your pond. Mussels also feed on certain aquatic plants. - Simon
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What should I pay attention to when keeping mussels?
Mussels are very useful water purifiers in the pond. To keep mussels in good health, it is advisable to pay attention to a few important points:
- Water quality: Freshwater mussels are sensitive to changes in water quality. It is therefore important to water values including the pH value, hardness and temperature of the water regularly. Make sure these parameters are within the optimal range for your mussels.
- Nutrition: Freshwater mussels feed on small particles in the water, such as algae and pond bacteria. It is therefore important to have sufficient nutrients in the water to support the growth of these microorganisms. However, overfeeding should be avoided as this can lead to an accumulation of organic matter in the water, which can affect water quality.
- Protection: Freshwater mussels can be vulnerable to predators in your pond or aquarium. It is therefore important to provide adequate hiding places, such as rocks or aquatic plants, where the mussels can hide. If you notice your mussels being attacked, consider placing them in nets to protect them.
- Cleaning: It is important to perform regular maintenance on your pond or aquarium to maintain a healthy environment for your freshwater mussels. Regularly remove organic debris, such as leaves and dead plants, to prevent too much organic material from accumulating in the water.
Frequently asked questions about freshwater mussels
Freshwater mussels, like "normal" mussels, are not harmful to your health when you eat them, but their taste, unlike saltwater mussels, is downright gross.
A freshwater mussel can live up to 14 years under optimal conditions!

Simon van der Velde
Pond specialist and aquatic plant grower since 1986
Simon's vision is to let nature do its work in your pond. No need to buy all kinds of measuring equipment and water improvers. If the fish are swimming nicely and the plants are growing well, then the water in the pond is of good quality. With a good planting plan and the right approach, you can save a lot of money and maintenance, and ensure a clear, biologically balanced pond that becomes more beautiful every year.