Devon and Cornwall and the Isles of Scilly · Environment Agency surveys
What fish are in the Main River Coly?
Monitoring has recorded 11 species across 9 surveyed sites on this water, between 1997 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 trutta9 siteslatest 11 Jul 2025
- BullheadCottus gobio9 siteslatest 11 Jul 2025
- Stone loachBarbatula barbatula9 siteslatest 11 Jul 2025
- European eels > elversAnguilla anguilla8 siteslatest 11 Jul 2025
- MinnowPhoxinus phoxinus8 siteslatest 11 Jul 2025
- European elversAnguilla anguilla6 siteslatest 24 May 2024
- Atlantic salmonSalmo salar4 siteslatest 30 Jun 2023
- European eelAnguilla anguilla3 siteslatest 10 Jun 2015
- Lamprey sp.Petromyzontidae2 siteslatest 30 Jun 2023
- 3-spined sticklebackGasterosteus aculeatus1 sitelatest 15 Jun 2021
- FlounderPlatichthys flesus1 sitelatest 29 Jun 2023
Surveyed sites on this water
9 shown, newest survey first
U/S Cadhayne (Te)
- Survey events
- 7
- Observed taxa
- 8
- Latest survey
- 11 Jul 2025
D/S FT BR Cadhayne (5 min)
- Survey events
- 2
- Observed taxa
- 5
- Latest survey
- 30 May 2024
Colemans Cross (5 min)
- Survey events
- 2
- Observed taxa
- 6
- Latest survey
- 24 May 2024
U/S Chantry Bridge (5 min)
- Survey events
- 2
- Observed taxa
- 6
- Latest survey
- 24 May 2024
U/S Colyford (5 min)
- Survey events
- 2
- Observed taxa
- 6
- Latest survey
- 24 May 2024
U/S Colyford (Sp)
- Survey events
- 8
- Observed taxa
- 11
- Latest survey
- 29 Jun 2023
Woodbridge (Sp)
- Survey events
- 9
- Observed taxa
- 6
- Latest survey
- 31 May 2023
U/S Southleigh Str
- Survey events
- 1
- Observed taxa
- 4
- Latest survey
- 6 May 2020
Heathayne (Te)*
- Survey events
- 14
- Observed taxa
- 8
- Latest survey
- 10 Jun 2015
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