Lamprey River wide range of valuable wildlife habitats. Its anadromous fishery is one of the strongest in the Great Bay watershed. Anadromous fish species that use the Lamprey River include shad, river herring, smelt and even Atlantic salmon. These fish are hatched in the river, then spend most of their lives out at sea, returning to the river to spawn. The fish species will move up the river as far as Durham, where they are prevented from moving further upstream by Wiswall Dam. The river is also rich in species of freshwater mussels. The river is managed by the New Hampshire Fish
Rockhead (fish) Its diet consists of benthic shrimp and crabs. Rockhead (fish) The rockhead ("Bothragonus swanii"), also known as the deep-pitted poacher or deep-pitted sea-poacher, is a fish in the poacher family, Agonidae. It was described by Franz Steindachner in 1876, originally in the genus "Hypsagonus". It is found in the eastern Pacific Ocean from Alaska to Carmel Bay, California down to depths of 18 metres. It can also inhabit the intertidal zone. Males can reach a maximum total length of 8.9 centimetres. The species epithet ""swanii"" refers to James G. Swan of Port Townsend, Washington. The rockhead spawns nearshore, during the