Species (sp.): Pea clam (Pisidium sp.)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Akersvannet | Vestfold, Norway | 1 | 1 | 0 | 1993-09-16 | |
| Apeltunvatnet | Vestland, Norway | 2 | 1 | 0 | 2008-06-12 | |
| Arkavatnet | Rogaland, Norway | 4 | 1 | 0 | 1992-09-22 | |
| Bergemsvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1990-10-04 | |
| Bergvikvatnet | Nordland, Norway | 4 | 1 | 0 | 1993-09-13 | |
| Bjørnedammen | Akershus, Norway | 1 | 1 | 0 | 2013-09-19 | |
| Buvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-12 | |
| Elgtjern | Trøndelag, Norway | 1 | 1 | 0 | 1990-05-25 | |
| Fetvatnet | Møre og Romsdal, Norway | 2 | 1 | 0 | 1990-09-18 | |
| Floen | Vestland, Norway | 3 | 1 | 0 | 1996-05-14 | |
| Fløyta | Akershus, Norway | 2 | 1 | 0 | 1993-05-27 | |
| Gjellumvannet | Akershus, Norway | 1 | 1 | 0 | 2013-10-10 | |
| Gjølsjøen | Østfold, Norway | 1 | 1 | 0 | 1996-06-11 | |
| Grindheimsvatnet | Agder, Norway | 1 | 1 | 0 | 1989-09-19 | |
| Gullerudtjern | Buskerud, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Hammervatnet | Trøndelag, Norway | 7 | 1 | 0 | 1996-10-17 | |
| Hauskjevatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-05-28 | |
| Hjørungdalsvatnet | Møre og Romsdal, Norway | 3 | 1 | 0 | 1993-06-11 | |
| Hostadvatnet | Møre og Romsdal, Norway | 3 | 1 | 0 | 1993-06-16 | |
| Husavatnet | Vestland, Norway | 2 | 1 | 0 | 1990-09-20 | |
| Håskjoldtjern | Møre og Romsdal, Norway | 3 | 1 | 0 | 1992-08-20 | |
| Ibestadvatnet | Troms, Norway | 1 | 1 | 0 | 1990-09-11 | |
| Jarenvannet | Innlandet, Norway | 4 | 1 | 0 | 1996-09-18 | |
| Klevatn | Nordland, Norway | 2 | 1 | 0 | 1993-09-06 | |
| Knurrvatnet | Nordland, Norway | 1 | 1 | 0 | 1989-08-30 | |
| Kvitblikkvannet | Nordland, Norway | 3 | 1 | 0 | 1993-09-02 | |
| Laglim | Innlandet, Norway | 1 | 1 | 0 | 2012-10-11 | |
| Laksådalsvatnet | Nordland, Norway | 4 | 1 | 0 | 1992-08-28 | |
| Langavatnet | Vestland, Norway | 3 | 1 | 0 | 1990-09-25 | |
| Laupen | Innlandet, Norway | 3 | 1 | 0 | 1992-09-30 | |
| Lauvtjønna | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Ledengstjern | Østfold, Norway | 1 | 1 | 0 | 1994-05-27 | |
| Litlevatn | Møre og Romsdal, Norway | 1 | 1 | 0 | 1994-04-27 | |
| Losby besøksgård | Akershus, Norway | 1 | 1 | 0 | 2010-06-22 | |
| Lundarvatnet | Vestland, Norway | 2 | 1 | 0 | 1993-10-04 | |
| Maltjern | Akershus, Norway | 2 | 1 | 0 | 1992-06-23 | |
| Merkestjørna | Vestland, Norway | 1 | 1 | 0 | 1995-06-01 | |
| Moensvatnet | Vestland, Norway | 1 | 1 | 0 | 1990-10-25 | |
| Mosvatnet | Rogaland, Norway | 2 | 1 | 0 | 1993-09-28 | |
| Nesttunelven | Vestland, Norway | 1 | 1 | 0 | 2013-04-23 | |
| Oltervatnet | Nordland, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Opsangervatnet | Vestland, Norway | 2 | 1 | 0 | 1994-06-03 | |
| Reinsvolldammen | Innlandet, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Rossevatn | Rogaland, Norway | 6 | 1 | 0 | 1993-09-20 | |
| Rundvannet | Troms, Norway | 3 | 1 | 0 | 1993-09-10 | |
| Røldalstjørnet | Vestland, Norway | 3 | 1 | 0 | 1992-09-09 | |
| Rørvatnet | Møre og Romsdal, Norway | 5 | 1 | 0 | 1995-09-05 | |
| Sadvikselva 3 | Akershus, Norway | 1 | 1 | 0 | 2008-10-23 | |
| Sagtjernet | Innlandet, Norway | 1 | 1 | 0 | 1990-06-25 | |
| Seljebøvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-19 | |