Daphnia are a genus of crustaceans, and while they are rare in activated sludge processes, they are commonly found in wastewater lagoon treatment systems. Often times, daphnia may be referred to as “water fleas,” a label that generally covers a broad range of crustaceans. The most common species found in nature are D. pulex (small) and D. magna (larger size), while over 100 species are currently recognized. From a microscopy perspective, recognizing them as a crustacean or a daphnia are adequate from a practical standpoint.
There are high amounts of research publications available for daphnia. The main area of focus has been on daphnia’s role
