[Caitlin]

More Rhode Island unios

Lampsilis radiata--This mussel prefers the larger rivers and ponds in the state, and is locally abundant in Watuppa Pond along the eastern Rhode Island border with Massachusetts.

Sphaerium simile--This fingernail clam grows to a maximum

size of about 3/4 inch, is found throughout the state, and can
be locally abundant in backwaters and slow streams.
Pisidium compressum--This fingernail clam very rarely exceeds
1/4 inch in length and is very common in permanent freshwater
ponds throughout Rhode Island.