Week 3

As the weeks have gone by I have noticed that I am not seeing as many organisms in my aquarium yet the variety continues to grow. I continue to see mainly diatioms, rotophers, and halteria, I did discover two new organisms this week. The vorticella and the nematode. The vorticella is a bell shaped cilliate that is a member of the protozoa family. When it is stimulated the stalk shrinks like a coil. the Nematode or roundworm is part of the largest family in the animal kingdom. Over 80,000 have been identified and some believe that there may be over 500,000 different species.