The James River Spinymussel (JRSM) is a federally endangered freshwater mussel native to North Carolina, Virginia, and West Virginia. We found a population of JRSM in Rocky Creek along with Villosa constricta and Strophitus undulatus. We are monitoring the JRSM population for the Virginia Department of Game and Inland Fisheries. We also searched for JRSM in additional rivers and we are also studying the movement of mussels in Rocky Creek. Eventually, we hope to hypothesize a cause of their population change and perhaps introduce them to new environments, potentially increasing their population size. Through tagging and tracking the mussels we hope to find a general idea of how quickly a population changes and moves. We still do not know the best environment for the JRSM, but hope that our research will lead to sustained population growth for this specific endangered species.