Identification Keys to Massachusetts Freshwater Fishes
by
Karsten E. Hartel, David B. Halliwell,
and
Alan E. Launer
Information on how to use keys is available
here
KEYS to FAMILIES AND MONOTYPIC SPECIES
KEY to THE LAMPREY FAMILY Petromyzontidae
KEY to THE STURGEON FAMILY Acipenseridae
KEY to THE HERRING FAMILY Clupeidae
KEY to THE MINNOW AND CARP FAMILY Cyprinidae
KEY to THE SUCKER FAMILY Catostomidae
KEY to THE BULLHEAD FAMILY Ictaluridae
KEY to THE PIKE AND PICKEREL FAMILY Esocidae
KEY to THE SALMON AND TROUT FAMILY Salmonidae
KEY to THE COD FAMILY Gadidae
KEY toTHE KILLIFISH and PUPFISH FAMILIES Fundulidae and Cyprinodontidae
KEY to THE SILVERSIDE FAMILY Atherinidae
KEY to THE STICKLEBACK FAMILY Gasterosteidae
KEY to THE TEMPERATE BASS FAMILY Moronidae
KEY to THE SUNFISH AND BLACK BASS FAMILY Centrachidae
KEY to THE PERCH AND DARTER FAMILY Percidae