Juvenile Daphnia sp.
This is a young Daphnia that I found in a small jar of clean lake water with Eurycercus. They appear to be Daphnia pulex, but as young these are hard to identify. The heart is extremely well seen in this particular cladoceran.
This is a young Daphnia that I found in a small jar of clean lake water with Eurycercus. They appear to be Daphnia pulex, but as young these are hard to identify. The heart is extremely well seen in this particular cladoceran.