![Seppo on Twitter: "Reproduction cycle of the fabulous Freshwater Pearl Mussel. Some mussel populations prefer juvenile #trout as their host like in the pic, some prefer Atlantic #salmon. #fishmigration #salmonids #Margaritifera #molluscs Seppo on Twitter: "Reproduction cycle of the fabulous Freshwater Pearl Mussel. Some mussel populations prefer juvenile #trout as their host like in the pic, some prefer Atlantic #salmon. #fishmigration #salmonids #Margaritifera #molluscs](https://pbs.twimg.com/media/Dy1nJHmW0AEJfia.jpg:large)
Seppo on Twitter: "Reproduction cycle of the fabulous Freshwater Pearl Mussel. Some mussel populations prefer juvenile #trout as their host like in the pic, some prefer Atlantic #salmon. #fishmigration #salmonids #Margaritifera #molluscs
![EGB: News - Small but with big impact! Freshwater pearl mussels need protection in the uppermost corner of European Green Belt EGB: News - Small but with big impact! Freshwater pearl mussels need protection in the uppermost corner of European Green Belt](https://www.europeangreenbelt.org/fileadmin/_processed_/3/b/csm_06_An_ideal_freshwater_pearl_mussel_population_consisting_of_different_age_groups_Photo_Heikki_Erkinaro__002__076330e98f.jpg)
EGB: News - Small but with big impact! Freshwater pearl mussels need protection in the uppermost corner of European Green Belt
![Life cycle of the freshwater pearl mussel (Margaritifera margaritifera... | Download Scientific Diagram Life cycle of the freshwater pearl mussel (Margaritifera margaritifera... | Download Scientific Diagram](https://www.researchgate.net/publication/225110465/figure/fig3/AS:341172556976131@1458353284368/Life-cycle-of-the-freshwater-pearl-mussel-Margaritifera-margaritifera-L.png)
Life cycle of the freshwater pearl mussel (Margaritifera margaritifera... | Download Scientific Diagram
![File:A freshwater pearl mussel on the banks of the Spey. - geograph.org.uk - 412666.jpg - Wikimedia Commons File:A freshwater pearl mussel on the banks of the Spey. - geograph.org.uk - 412666.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/a/a7/A_freshwater_pearl_mussel_on_the_banks_of_the_Spey._-_geograph.org.uk_-_412666.jpg)
File:A freshwater pearl mussel on the banks of the Spey. - geograph.org.uk - 412666.jpg - Wikimedia Commons
![Gemological and Chemical Characteristics of Natural Freshwater Pearls from the Mississippi River System | Gems & Gemology Gemological and Chemical Characteristics of Natural Freshwater Pearls from the Mississippi River System | Gems & Gemology](https://www.gia.edu/images/SU19-GNI-Fig1-243487-636px.jpg)