The rusty crayfish is a large, aggressive species of freshwater crayfish which is native to the United States, in the Ohio River Basin in parts of Ohio, Kentucky, and Indiana. Its range is rapidly expanding across much of eastern North America, displacing native crayfishes in the process. The rusty crayfish was first captured in Illinois in 1973, and has been collected at over 20 locations in the northern portion of the state. In 2005, F. rusticus was found for the first time west of the Continental Divide, in the John Day River, Oregon, which runs into the Columbia River.
Faxonius hathawayi blacki, the Calcasieu crayfish, is a sub-species of crayfish in the family Cambaridae. It is endemic to Louisiana. The common name refers to the Calcasieu River, near where the original specimens were found in Beauregard Parish, Louisiana.
Faxonius deanae, the Conchas crayfish is a species of crayfish in the family Cambaridae. It is endemic to the United States. The common name refers to the Conchas Lake, where the original specimens were found.
Faxonius holti, the bimaculate crayfish, is a species of crayfish in the family Cambaridae. It is endemic to Alabama where it occurs in a limited portion of the lower Tombigbee and central Alabama drainages.
Faxonius jonesi, the Sucarnoochee River crayfish, is a species of crayfish in the family Cambaridae. The common name refers to the Sucarnoochee River, near where the original specimens were found in Kemper County, Mississippi. It is endemic to Mississippi and Alabama in the United States.
Faxonius peruncus, the Big Creek crayfish, is a species of crayfish in the family Cambaridae. It is endemic to Missouri. The common name refers to Big Creek, where the original specimens were found.
Faxonius quadruncus, the St. Francis River crayfish, is a species of crayfish in the family Cambaridae. It is endemic to Missouri. The common name refers to the St. Francis River where the first examples were found.
Faxonius saxatilis is a species of crayfish in the family Cambaridae. It is endemic to tributaries of the Kiamichi River, Le Flore County, Oklahoma. Its common name is Kiamichi crayfish.
The Nashville crayfish, Faxonius shoupi, is a freshwater crustacean native to the Mill Creek Basin in Nashville, Tennessee. Prior to August 2017, the species was called Orconectes shoupi. Faxonius shoupi is protected under the Endangered Species Act (ESA) as an endangered species. However, the crayfish has recently been put up for delisting by the United States Fish and Wildlife Service.
Faxonius sloanii, the Sloan or Sloan's crayfish is a species of crayfish in the family Cambaridae, native to Indiana and Ohio. It is associated with freshwater habitats. Although it is being slowly out-competed by the rusty crayfish in Ohio, it is listed as a species of Least Concern on the IUCN Red List.
Faxonius stannardi, the Little Wabash crayfish, is a species of crayfish in the family Cambaridae. It is endemic to Illinois. The common name refers to the Little Wabash River, where the original specimens were found.
Faxonius limosus, synonym Orconectes limosus, is a species of crayfish in the family Cambaridae. It is native to the east coast of North America, from Quebec to the lower James River, Virginia, but has also been introduced to Europe. It is known commonly as the spinycheek crayfish or Kamberkrebs in German.
Faxonius sanbornii, the Sanborn or Sanborn's crayfish, is a species of crayfish native to Ohio and other areas in the midwest. It has been greatly affected by the invasive Rusty crayfish in many river habitats in Ohio and West Virginia, however it is regarded as Least Concern by the IUCN, and it has been introduced to Washington.
Faxonius virilis is a species of crayfish known as the virile crayfish, northern crayfish,eastern crayfish, and lesser known as the lake crayfish or common crawfish. Faxonius virilis was reclassified in August 2017, and the genus was changed from Orconectes to Faxonius. It is native to the central United States, east to tributaries of Lake Erie, Lake Ontario, Lake Champlain and the St. Lawrence River in New York and to much of Canada.
Faxonius alabamensis, the Alabama crayfish, is a species of freshwater crayfish that lives in Alabama, Mississippi and Tennessee.
Faxonius maletae, sometimes called the Kisatchie painted crayfish or Kisatchie painted crawfish, is a species of crawdad in the Cambaridae family. The specific epithet maletae is in honor of the discoverer's wife, author Maleta M. Walls, who helped collect many of the original specimens. It was originally described as a subspecies of Orconectes difficilis, but later elevated to full species status. The common name refers to the Kisatchie National Forest, near where the original specimens were found in Bayou Santabarb.
Faxonius erichsonianus is a species in the family Cambaridae ("crayfishes"), in the order Decapoda. A common name for Faxonius erichsonianus is reticulate crayfish. Faxonius erichsonianus is found in the south eastern United States of America.
Faxonius validus, the powerful crayfish, is a species of crayfish in the family Cambaridae. It is found in North America.
Faxonius is a genus of freshwater crayfish in the family Cambaridae. There are more than 90 described species in Faxonius. It includes the rusty crayfish, an invasive species in North America, and three species, F. virilis, F. immunis, and F. limosus, that are invasive to Europe.
Faxonius lancifer, the shrimp crayfish, is a species of crayfish in the family Cambaridae. It is widespread in the South-Eastern United States.
