I took a couple off, and looked at them under a magnifying glass but they didn't look like any native mussels I had ever seen."

The Tye River is home to dozens of species of fish and other aquatic life, including American eels, small and largemouth bass, and native mussels.

The black carp feeds on native mussels and snails, some of which can be already endangered.

Silver carp feed on the plankton necessary for larval fish and native mussels.

Mytilus trossulus is the main native intertidal mussel in the Northern Pacific.

As native mussels are abundant in pygmy madtom habitat, it is possible that this species might use empty mussel shells for nesting cover.

It might also displace native mussels by introducing harmful parasites and diseases.

The mollusks are efficient filter feeders, competing with native mussels, and can reduce available food and spawning grounds for fish.

They compete with native mussels, and also reduce available food and spawning grounds for fish.

In China and Japan, the native mussel is found in intertidal zones with densities up to 2500 individuals per square metre.