river, the population of oysters hit an all-time low in 2000 at . However, the rate rebounded to just a couple years later. Another species that lives in the Oyster River is the American Brook Lamprey (Lampetra appendix), which only exists in this river in the entire state. The river as a whole is home to seven fish species of concern. See also List of rivers of New Hampshire Sources References Further reading Rivers of New Hampshire Rivers of Strafford County, New Hampshire