|Phylum Arthropoda - Class Branchiopoda - Water Fleas, Daphnia|
Distinguishing characteristics - The body of Branchiopoda is covered by a carapace (Fig. A). They have swimming appendages, that are branched, which are their chief means of locomotion (Fig. B). Branchiopoda also have a large compound eye (Fig. C).
Tolerance Value - 8
Feeding Group - Filterer
Notes - These organisms are often called Daphnia, which is a name for a particularly common genus. Since this is a genus name, it shuld be avoided in describing all members of the group.