![A largemouth bass is marked with a tail fin clip prior to the quagga mussel treatment.](https://hagadone.media.clients.ellingtoncms.com/img/photos/2023/12/06/marking_fish_with_caudal_fin_clip_sept_2023_snake_river_t1170.jpeg?5cc718665ab672dba93d511ab4c682bb370e5f86)
A largemouth bass is marked with a tail fin clip prior to the quagga mussel treatment.
December 7, 2023
Stories this photo appears in:
![Effect of quagga mussel treatment on fish populations](
https://hagadone.media.clients.ellingtoncms.com/img/photos/2023/12/06/sucker_mortalities_quagga_mussel_treatment_tx100.jpeg?5e0763479bdcc57ad7422641dafc91b6e03c6cf5
)
December 7, 2023 1 a.m.
Effect of quagga mussel treatment on fish populations
Treatment caused high mortality in some species; others survived well
Biologists quickly learned that the treatment caused high mortality in certain species, while others survived quite well.