1. Recently some Brachiopoda, coral, gastropoda, phytolite is identified by Nanjing Institute of Geology and Palaeontology China Academy of Sciences. The age belongs to Late Carboniferous epoch.

2. Few species, low biomass and lack of blue green algae, Gastropoda, Lamellibranchia and Crustacea are most notable characteristics distinguished from general neutral and alkaline lakes.

3. Among them there are 3 species of Amphineura, 68 species of Lamellibranchia, 80 species of Gastropoda.

4. In the foci of angiostrongylus cantonensis in Sanming, we collected 962 aquatic snails gastropoda(including 312 pomacca lineata spix), 18 samples of mouse feces and 1 amphioxus in total.

5. This paper reports a comparative study about esterase isoenzymes and the relationship of 6 species of freshwater Gastropoda, which belong to 5 genera, 4 families with gel electrophoresis method.