• Mississippi National River and Recreation Area


    National River & Recreation Area Minnesota


(Actinonaias ligamentina) Lamarch, 1819
A Mucket mussel
U.S. Army Corps of Engineers
Other Common Names:
Grass mucket, brass mucket, steamboat mucket.
Can be found in gravel or a mixture of gravel and sand in medium to larger rivers such as the Mississippi River.
Up to 7 inches (17.8 cm).
Outer Shell Color:
Yellowish brown to brown with green rays, larger shells are of darker brown.
Inner Shell Color:
White, somtimes with a tinge of pink or salmon, has rainbow color towards the end farthest from where the two halves meet.
Shell Thickness:
Shell Outline:
Longer than it is wide. The end closest to where the two halves meet is round, while the opposite end is bluntly pointed.
Shell Surface:
Scientific Description:
Heavy, suboval, yellow or brown shell with green rays. No mantle flap.
Similar Looking Mussels:
Host Fish:
12 mostly widespread and common.
Widespread and locally abundant.
Minnesota State Listing:
Federal Listing:

Did You Know?

Headwaters of the Mississippi

The Mississippi River is approximately three feet deep at its headwaters at Lake Itasca and has an average surface speed of 1.2 miles per hour.