Fish in the Assabet

Click on the common name of each fish for species-specific information about habitat requirements, life history, and current distribution within the Assabet watershed. (Species present as of 2001.)

Common Name Genus Species
American eel Anguila rostrata
Banded Sunfish Enneacanthus obesus
Black crappie Pomoxis nigromaculatus
Blacknose dace Rhinichthys atratulus
Bluegill Lepomis macrochirus
Brook trout Salvelinus fontinalis
Brown bullhead Ameiurus nebulosus
Brown trout Salmo trutta
Chain pickerel Esox niger
Common carp Cyrinus carpio
Creek chubsucker Erimyzon oblongus
Fallfish Semotilus corporalis
Golden shiner Notemigonus crysoleucas
Green sunfish Lepomis cyanellus
Largemouth bass Micropterus salmoides
Longnose dace Rhinichthys cataractae
Pumpkinseed Lepomis gibbosus
Rainbow trout Oncorhynchus mykiss
Redbreast sunfish Lepomis auritus
Redfin pickerel Esox americanus
Smallmouth bass Micropterus dolomieu
Spottail shiner Notropis hudsonius
Tiger muskie (Esox lucius x E. masquinongy) hybrid
Tiger trout (Salvelinus fontinalis x Salmo trutta) hybrid
White perch Morone americana
White sucker Catostomus commersoni
Yellow bullhead Ameiurus natalis
Yellow perch Perca flavescens

Extirpated Clupiedae species:
Two species of the herring family, alewife and American shad, once lived in the Assabet, Sudbury and Concord Rivers and tributary streams, but disappeared because of dams that blocked their migration between salt and fresh water. U.S. Fish and Wildlife, with Mass Riverways, Lowell Parks and Conservation Trust,and other volunteer groups, worked on an anadromous fish restoration program on the Merrimack and Concord Rivers. In the spring of 2004 appx. 4,500 alewife and 400 American shad were transferred into the Sudbury and Concord Rivers. Providing fish passage for these fish may allow them to make a come-back on the Assabet River as well.

Common Name Genus Species
Alewife Alosa pseudoharengus
American shad Alosa sapidissima