Hypsibius dujardini

Hypsibius dujardini sensu lato" is a species complex of tardigrade in the class Eutardigrada. A member of this complex, Hypsibius exemplaris", is widely used for various research projects pertaining to evolutionary biology and astrobiology.
"H. exemplaris" was differentiated from "H. dujardini sensu stricto" in 2018. Earlier studies refers to this lab species from north-west England as "H. dujardini". "H. dujardini s.s." is found in France, and has differences in 18S rRNA sequence and morphological details.
Habitat.
The species, "Hypsibius dujardini", is a tardigrade that prefers freshwater lakes, rivers, and streams. Because they are considered cosmopolitan, their geographical range is immense. They can be found in regions like the tropics and the poles.
Genome sequencing.
The genome of "Hypsibius exemplaris" has been sequenced. "Hypsibius exemplaris" has a compact genome and a generation time of about two weeks. It can be cultured indefinitely and cryopreserved.