Sludge worm
- kingdom: Animalia
- phylum: Annelida
- class: Clitellata
- order: Haplotaxida
- family: Naididae
- genus: Tubifex
- species: Tubifex tubifex
- Zeebrugge
Flanders
Belgium- Bauler
- Wiesemscheid
Rheinland-Pfalz- Lampertswalde
- Radibor
Saxony- Beendorf
- Haldensleben
- Samswegen
- Süplingen
- Weferlingen
- Zielitz
Saxony-Anhalt
Germany- Falun
Dalarna- Falkenberg
Halland
Sweden