Platyhelminthes
- Z50 Planarians, large mixed species 10
- Z52 Polycelis nigra 10 Small, black flatworm, feeds on tubifex
- Z53 Polycelis felina 10 Small vigorous stream species
- Z55 Dendrocoelium lacteum 10 Very large, white sp. feeds on Asellus
- Z60 Dugesia lugubris 10 Large brown sp. feeds on oligochates
- Z62 Dugesia tigrina 10 Smaller species, introduced from North America. Feeds on Daphnia.
- Z54 Polycelis tenuis 10 Small brown flatworm from flowing water