The Everglades crayfish, sometimes called the Florida crayfish, the blue crayfish, the electric blue crayfish, or the sapphire crayfish, is a species of freshwater crayfish endemic to Florida in the United States. Its natural range is the area east of St. Johns River and all of Florida from Levy County and Marion County southwards, as well as on some of the Florida Keys. It is included on the IUCN Red List as a species of Least Concern. The blue crayfish is frequently kept in a freshwater aquaria. In the wild, this species varies from brown-tan to blue, but an aquarium strain has been selectively bred to achieve a brilliant cobalt blue color.
Crangonyx is a genus of crustacean in family Crangonyctidae. Crangonyx species can live in marshes, savannas or swamps as well as caves. It contains the following species:
Crangonyx grandimanus is a species of crustacean in family Crangonyctidae. It is endemic to the United States.
Crangonyx hobbsi is a species of troglobitic amphipod in the family Crangonyctidae. It is only known from its type locality, which is "a well, 50 feet deep, 1.5 miles northeast of Chiefland, Levy Co., Florida". It is listed as a vulnerable species on the IUCN Red List.
Lirceus usdagalun is a rare species of crustacean known by the common name Lee County cave isopod. It is endemic to Virginia in the United States, where it is known from a single network of karst cave systems in Lee County. It is threatened by a number of processes. It is a federally listed endangered species of the United States, and is assessed as "endangered" by the International Union for Conservation of Nature.
Stygobromus is a genus of amphipod crustaceans that live in subterranean habitats. The majority of the listed species are endemic to North America, a smaller number of species are also known from Eurasia. Most of the North American species live in areas which were not covered by the Laurentide Ice Sheet, although a few species seem to have survived under the ice. A number of species are on the IUCN Red List as endangered species (EN) or vulnerable species (VU); one species, S. lucifugus, is extinct.
Stygobromus arizonensis, the Arizona cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Arizona in the United States.
Stygobromus balconis, the Balcones cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Texas in the United States.
Stygobromus barri, commonly called Barr's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Missouri in the United States.
Stygobromus bifurcatus, the bifurcated cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Texas in the United States.
Stygobromus bowmani, commonly called Bowman's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Oklahoma in the United States.
Stygobromus clantoni, commonly called Clanton's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is native to Kansas and Missouri in the United States.
Stygobromus cooperi, commonly called Cooper's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to a single cave, Silers cave in Berkeley County, West Virginia in the United States.
Stygobromus emarginatus, commonly called Greenbrier cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is native to Maryland and West Virginia in the United States.
Stygobromus ephemerus, commonly called ephemeral cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Virginia in the United States.
Stygobromus gradyi, commonly called Grady's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to California in the United States.
Stygobromus pizzinii, commonly called Pizzini's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is native to District of Columbia, Maryland, Pennsylvania and Virginia in the United States.
Stygobromus stellmacki, commonly called Stellmack's cave amphipod is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Pennsylvania in the United States.
Crangonyctidae is a family of cave-dwelling freshwater amphipod crustaceans. It contains the following genera:
Crangonyx gracilis, the northern lake crangonyctid, is a species of amphipod in the family Crangonyctidae. It is found in North America.
