Canadian River

Lake Meredith, near Amarillo, was recently designated as "fully infested" with invasive zebra mussels. The mussels have been spreading across Texas for more than 15 years and Lake Meredith is the north-most body of water in the state to be infected. TPWD says the mussels have the potential to damage treatment equipment in what is a municipal water source for the region, but water officials with the lake say they're prepared.

The Arkansas Shiner is a small, silvery minnow that spawns in the Canadian River. It also has a prime spot on the federal government’s list of threatened…