Modifies a noun

• fishery: Esk and Tay District Salmon Fishery Boards carry out scientific work and employ fishery managers to enhance the potential of the salmonid fishery.

• fish: The loss of salmonid fish from many river systems is assumed to have badly affected mussel reproductive success.

• river: The Bush and the Main are also salmonid rivers.

• specie: Features: The unmistakable huge dorsal fin of the grayling sets it apart from all other salmonid species.

• population: Freshwater pearl mussels need healthy salmonid populations to complete their life cycle.

• stock: It is one of only two rivers in the south west of England holding its targets for sustainable salmonid stocks.