ARAnglerRadar evidence & rules

Compare river fishing evidence · England

Same facts.
No winner score.

Choose two named waters and compare the evidence that actually exists. Survey effort, species records and freshness are shown separately because none proves access, current presence or fishing quality.

Kent, South London and East Sussex

Len

Survey sites
7
Survey events
16
Recorded taxa
21
Evidence period
20 Aug 2002 – 24 Jul 2023
Sites latest within 2 years
0
Sites latest over 10 years ago
4
EA waterbody IDs
GB106040018430
Access status
Not established by survey data
Thames

River Kennet

Survey sites
56
Survey events
264
Recorded taxa
31
Evidence period
28 Sept 1999 – 14 Oct 2025
Sites latest within 2 years
16
Sites latest over 10 years ago
31
EA waterbody IDs
GB106039017420 · GB106039023120 · GB106039023140 · GB106039023172
Access status
Not established by survey data

Overlap

21 recorded taxa appear in both survey sets

The site counts are shown per water. A higher count can reflect more monitoring sites, not a larger or healthier population.

  1. PikeLen 4River Kennet 47Latest evidence 24 Jul 2023 · 9 Oct 2025
  2. Brown / sea troutLen 3River Kennet 47Latest evidence 1 Sept 2017 · 14 Oct 2025
  3. ChubLen 4River Kennet 41Latest evidence 24 Jul 2023 · 9 Oct 2025
  4. DaceLen 2River Kennet 41Latest evidence 7 Sept 2011 · 9 Oct 2025
  5. PerchLen 4River Kennet 38Latest evidence 24 Jul 2023 · 9 Oct 2025
  6. RoachLen 4River Kennet 36Latest evidence 24 Jul 2023 · 8 Oct 2025
  7. GudgeonLen 6River Kennet 31Latest evidence 24 Jul 2023 · 1 Oct 2025
  8. BleakLen 1River Kennet 27Latest evidence 24 Jul 2023 · 25 Sept 2025
  9. Common breamLen 4River Kennet 19Latest evidence 24 Jul 2023 · 25 Sept 2025
  10. BarbelLen 1River Kennet 22Latest evidence 12 Jul 2023 · 25 Sept 2025
  11. BullheadLen 4River Kennet 11Latest evidence 24 Jul 2023 · 14 Oct 2025
  12. TenchLen 2River Kennet 13Latest evidence 8 Oct 2009 · 13 Nov 2024
  13. European eelLen 5River Kennet 9Latest evidence 19 Apr 2011 · 8 Nov 2013
  14. Roach x common bream hybridLen 1River Kennet 12Latest evidence 1 Aug 2017 · 25 Oct 2018
  15. Stone loachLen 2River Kennet 8Latest evidence 1 Sept 2017 · 8 Oct 2025
  16. Common [wild] carpLen 3River Kennet 5Latest evidence 12 Jul 2023 · 24 Oct 2018
  17. European eels > elversLen 3River Kennet 5Latest evidence 24 Jul 2023 · 10 Oct 2025
  18. RuddLen 3River Kennet 3Latest evidence 24 Jul 2023 · 4 Nov 2022
  19. 3-spined sticklebackLen 2River Kennet 4Latest evidence 19 Apr 2011 · 14 Oct 2025
  20. Mirror carpLen 1River Kennet 4Latest evidence 16 Aug 2004 · 4 Nov 2008
  21. Silver breamLen 1River Kennet 3Latest evidence 24 Jul 2023 · 4 Nov 2022

Only in the Len survey set

No distinct positive taxon aggregate in this comparison.

Only in the River Kennet survey set

  1. Grayling21 sites · latest 9 Oct 2025
  2. Atlantic salmon14 sites · latest 25 Oct 2010
  3. Minnow11 sites · latest 14 Oct 2025
  4. Ruffe9 sites · latest 5 Nov 2022
  5. Rainbow trout8 sites · latest 8 Oct 2024
  6. Brook lamprey7 sites · latest 14 Oct 2025
  7. Pike varieties5 sites · latest 1 Oct 2025
  8. Common carp varieties3 sites · latest 22 Oct 2015
  9. Brook lamprey > ammocoete1 site · latest 6 Oct 2023
  10. Golden goldfish1 site · latest 12 Nov 2009

Method and boundary

Comparison, not prediction.

  • SourceEnvironment Agency Ecology & Fish Data
  • LicenceOpen Government Licence v3.0
  • Source copy retrieved23 Jul 2026
  • CoordinatesNot published on this page
  • Not assertedAccess, current presence, abundance, catch prospects or safety
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