Texas Parks and Wildlife biologists say invasive zebra mussels have spread to the Trinity River basin.
Biologists today confirmed their presence in Lake Ray Roberts near Denton after DNA water analysis and follow-up surveys.
Biologists have tried to contain the spread of the snail-sized mussels to Lake Texoma, the only other Texas Lake where they’ve been found.
The concern is that the zebra mussels can cause millions of dollars in damages by attaching to pipes and clogging water intake systems. They also compete for food and can be harmful to fish populations.
State biologists believe the mussels were spread by boaters.
For more information on Zebra Mussels go to texasinvasives.org.