This is our most beautiful specimen.

She is a Daphnia rosea from the Old Durham Reservoir right on campus.

In the late summer of 2004, there were over 100 of these mommas per liter in the reservoir.

This is a Daphnia ambigua we keep in culture.

She is also from the Old Durham Reservoir (ODR) right on campus.

I never found very many of these in ODR, but they are present in the lower depths.

These are Daphnia pulex.

This is a very common species.  Almost too common.  They are such good competitors that they elimnated many of the Daphnia hyalina I was culturing .An accidental introduction is NOT fun.