Peer Review Plan for the Species Status Assessment Reports of Multiple Species

This report will inform a decision on whether these species warrant reclassification under the Endangered Species Act.

Publication date
Type of document
In progress
Media Usage Rights/License
Public Domain
Species
The fat threeridge is a medium-sized freshwater mussel that can grow to be four inches long (10.2 centimeters). This species has a dark brown to black outer shell with seven to nine horizontal ridges and a bluish-white to light purple inner shell. The left valve of the fat threeridge has two equal-...
FWS Focus
FWS and DOI Region(s)