You are here

Dreissena polymorpha

LHPrism Status 
Tier 3 - Established
Key Characteristics 
The zebra mussel shell is triangular with a sharply pointed shell hinge edge. The most obvious identifier is the prominent dark and light banding pattern on the shell.
It can grow to 5 cm, but most don't exceed 4 cm.
Impacts of this species 

The mussel attaches itself to hard surfaces by byssal threads that emerge from between the valves through a byssal notch. Zebra mussels tend to attach themselves to hard surfaces along their flat edge, which is different from other similar species. Clusters and takes away from native mussels.


For more information about zebra mussel identification, please visit:

For more information about zebra mussel best management practices, please visit:

Vertical Tabs