Devon and Cornwall and the Isles of Scilly · Environment Agency surveys
What fish are in the Ruthern?
Monitoring has recorded 9 species across 8 surveyed sites on this water, between 1980 and 2025. These are survey records with dates. They do not establish what is present today, that the water is fishable, or that you have permission to fish it.
Recorded species
What monitoring has found here
Ordered by how many sites on this water recorded the species. A species not listed has not been recorded by these surveys — which is not the same as being absent.
- Brown / sea troutSalmo trutta8 siteslatest 14 Jul 2025
- Atlantic salmonSalmo salar6 siteslatest 14 Jul 2025
- BullheadCottus gobio6 siteslatest 14 Jul 2025
- European eelAnguilla anguilla5 siteslatest 28 Jun 2010
- European eels > elversAnguilla anguilla5 siteslatest 14 Jul 2025
- European elversAnguilla anguilla4 siteslatest 14 Jul 2025
- Brook lamprey ammocoetesLampetra planeri3 siteslatest 4 Jul 2023
- Brook lampreyLampetra planeri1 sitelatest 24 Jul 2008
- Lamprey sp. ammocoetesPetromyzontidae1 sitelatest 28 Jun 2010
Surveyed sites on this water
8 shown, newest survey first
Ruthern Bridge
- Survey events
- 25
- Observed taxa
- 9
- Latest survey
- 14 Jul 2025
U/S Treliver
- Survey events
- 2
- Observed taxa
- 2
- Latest survey
- 10 Jul 2024
U/S Withiel
- Survey events
- 2
- Observed taxa
- 4
- Latest survey
- 10 Jul 2024
Ruthernbridge Dip
- Survey events
- 2
- Observed taxa
- 5
- Latest survey
- 2 Jul 2024
Trewithian
- Survey events
- 11
- Observed taxa
- 6
- Latest survey
- 4 Jul 2023
Withiel
- Survey events
- 12
- Observed taxa
- 7
- Latest survey
- 7 Jun 2023
Cottonwood
- Survey events
- 8
- Observed taxa
- 3
- Latest survey
- 21 Jul 2000
Trewollack
- Survey events
- 4
- Observed taxa
- 3
- Latest survey
- 7 Aug 1997
Provenance
Source and licence
- SourceEnvironment Agency Ecology & Fish Data
- LicenceOpen Government Licence v3.0
- Source copy retrieved23 Jul 2026
- Waterbody nameAs published by the Environment Agency
- Not assertedCurrent presence, access, permission, fishing quality or safety