Hertfordshire and North London · Environment Agency surveys
What fish are in the Ash (Thames)?
Monitoring has recorded 16 species across 7 surveyed sites on this water, between 2005 and 2023. 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.
- European eels > elversAnguilla anguilla7 siteslatest 5 Sept 2023
- ChubLeuciscus cephalus3 siteslatest 5 Sept 2023
- Common breamAbramis brama3 siteslatest 24 Aug 2017
- DaceLeuciscus leuciscus3 siteslatest 5 Sept 2023
- GudgeonGobio gobio3 siteslatest 5 Sept 2023
- PerchPerca fluviatilis3 siteslatest 5 Sept 2023
- PikeEsox lucius3 siteslatest 5 Sept 2023
- RoachRutilus rutilus3 siteslatest 5 Sept 2023
- BleakAlburnus alburnus2 siteslatest 5 Sept 2023
- European eelAnguilla anguilla2 siteslatest 23 Aug 2011
- BarbelBarbus barbus1 sitelatest 13 Oct 2005
- Brown / sea troutSalmo trutta1 sitelatest 5 Sept 2023
- BullheadCottus gobio1 sitelatest 5 Sept 2023
- Pike varietiesEsox lucius1 sitelatest 23 Aug 2011
- Roach x dace hybridRutilus rutilus x Leuciscus leuciscus1 sitelatest 13 Oct 2005
- Silver breamAbramis bjoerkna1 sitelatest 24 Aug 2017
Surveyed sites on this water
7 shown, newest survey first
Gaston Bridge
- Survey events
- 6
- Observed taxa
- 16
- Latest survey
- 5 Sept 2023
Ford Bridge Roundabout
- Survey events
- 2
- Observed taxa
- 10
- Latest survey
- 24 Aug 2017
US Ford Bridge Roundabout
- Survey events
- 1
- Observed taxa
- 8
- Latest survey
- 24 Aug 2017
Watersplash Road, Littleton
- Survey events
- 1
- Observed taxa
- 1
- Latest survey
- 26 Aug 2011
Beasley's Ait Lane
- Survey events
- 1
- Observed taxa
- 1
- Latest survey
- 14 Jul 2011
Splash Meadow, Shepperton
- Survey events
- 1
- Observed taxa
- 1
- Latest survey
- 14 Jul 2011
Woodthorpe Road
- Survey events
- 1
- Observed taxa
- 1
- Latest survey
- 12 Jul 2011
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