Fairy-shrimp
Guides
Branchinecta
fairy shrimp
Branchinecta is a genus of fairy shrimp (Anostraca) comprising approximately 50 species distributed across all continents except Australia. The genus includes the largest anostracan, Branchinecta gigas, reaching up to 10 cm in length, and the highest-altitude crustacean, B. brushi, recorded at 5,930 m elevation. Species occupy diverse temporary freshwater habitats from Arctic and Antarctic regions to high-elevation Andean pools. Two species, B. gaini and B. granulosa, have been synonymized based on molecular evidence showing insufficient genetic differentiation.
Chirocephalidae
fairy shrimp
Chirocephalidae is the second largest family of fairy shrimp (Anostraca), characterized by a reduced or vestigial maxilla, more than two setae on the fifth endite, divided pre-epipodites, and widely separated seminal vesicles. The family includes nine genera: Artemiopsis, Branchinectella, Chirocephalus, Dexteria (extinct), Eubranchipus, Linderiella, Parartemiopsis, Polyartemia, and Polyartemiella. Former families Linderiellidae and Polyartemiidae are now included within Chirocephalidae. Most species are distributed in the Holarctic region.
Dendrocephalus
fairy shrimp
Dendrocephalus is a genus of fairy shrimp (Anostraca) in the family Thamnocephalidae, distributed across South and North America. The genus is characterized by a distinctive antenna-like frontal appendage arising between the second antennae and the eyestalks. It comprises approximately 17 species arranged in two subgenera: Dendrocephalus (South American species) and Dendrocephalinus (North American species). Several species have been described recently, with ongoing taxonomic work revealing intra-populational polymorphism in frontal appendage morphology.
Eubranchipus
fairy shrimp, vernalis fairy shrimp, eastern fairy shrimp
Eubranchipus is a genus of freshwater fairy shrimp (Anostraca: Chirocephalidae) comprising 21 described species. These small branchiopods inhabit temporary pools and vernal ponds across North America, Europe, and Asia. Populations exhibit rapid life cycles synchronized with ephemeral aquatic habitats, hatching from desiccation-resistant resting eggs when pools fill and completing development before summer desiccation.
Eubranchipus serratus
Ethologist Fairy Shrimp
Eubranchipus serratus is a fairy shrimp species in the family Chirocephalidae, first described by Forbes in 1876. It is one of approximately 300 species of Anostraca, commonly known as fairy shrimp, which are specialized for temporary aquatic habitats. The species has been documented across North America, though specific ecological details remain limited in published sources.
Eubranchipus vernalis
springtime fairy shrimp, eastern fairy shrimp
Eubranchipus vernalis, commonly called the springtime fairy shrimp or eastern fairy shrimp, is a small freshwater crustacean in the family Chirocephalidae. It inhabits seasonal pools and vernal wetlands across North America. The species is named for its spring emergence pattern, appearing in temporary waters following winter thaw. As a branchiopod, it represents an ancient lineage of aquatic arthropods with specialized filtering appendages.
Streptocephalus
Rams-horn Fairy Shrimps
Streptocephalus is a genus of fairy shrimp (Anostraca) found in temporary freshwater habitats across Africa, Australia, Eurasia, and the Americas. Its distribution reflects an ancient Gondwanan origin. The genus is characterized by distinctive mandibular morphology adapted for processing diverse food sources. Species in this genus are obligate inhabitants of ephemeral aquatic environments, with life cycles synchronized to the temporary nature of their habitats.