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At the beginning of  April, breeding animals were collected in the river Our and Sûre and brought to the rearing facility at the mill of Kalborn.
Also host fishs (*Phoxinus phoxinus)* were already caught and wait to be infested with glochidia (larvae). This is normaly the case at the end of April.

- [![Channel with mussels - The 2018 propagation season is kicking off!](/thumbnails/81599-212-0-Max.jpg)](/files/81599.jpg "Channel with mussels - The 2018 propagation season is kicking off!")
- [![Unio crassus - The 2018 propagation season is kicking off!](/thumbnails/81598-212-0-Max.jpg)](/files/81598.jpg "Unio crassus - The 2018 propagation season is kicking off!")
- [![Host fish (Phoxinus phoxinus)](/thumbnails/81597-212-0-Max.jpg)](/files/81597.jpg "Host fish (Phoxinus phoxinus)")