Examining the highlighted area of your specimen, click on the image below which most closely resembles your specimen.
Tip area of rostrum with more
elongated polygon markings
Tip area of rostrum with roughly
symmetrical polygon markings
Taxonomy
Phylum
Arthropoda
Subphylum
Crustacea
Class
Branchiopoda
Suborder
Cladocera
Family
Daphniidae
Genus
Daphnia