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.

Hertfordshire and North London

Mimram

Survey sites
29
Survey events
108
Recorded taxa
24
Evidence period
14 Oct 2003 – 25 Sept 2025
Sites latest within 2 years
2
Sites latest over 10 years ago
12
EA waterbody IDs
GB106038033270 · GB106038033460
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

20 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. Brown / sea troutMimram 27River Kennet 47Latest evidence 25 Sept 2025 · 14 Oct 2025
  2. PikeMimram 5River Kennet 47Latest evidence 2 Sept 2025 · 9 Oct 2025
  3. DaceMimram 3River Kennet 41Latest evidence 2 Sept 2025 · 9 Oct 2025
  4. ChubMimram 1River Kennet 41Latest evidence 13 Jun 2006 · 9 Oct 2025
  5. PerchMimram 1River Kennet 38Latest evidence 14 Oct 2003 · 9 Oct 2025
  6. RoachMimram 2River Kennet 36Latest evidence 7 Oct 2014 · 8 Oct 2025
  7. GudgeonMimram 1River Kennet 31Latest evidence 14 Oct 2003 · 1 Oct 2025
  8. BullheadMimram 20River Kennet 11Latest evidence 25 Sept 2025 · 14 Oct 2025
  9. GraylingMimram 9River Kennet 21Latest evidence 25 Sept 2025 · 9 Oct 2025
  10. BleakMimram 1River Kennet 27Latest evidence 21 Sept 2010 · 25 Sept 2025
  11. Stone loachMimram 17River Kennet 8Latest evidence 25 Sept 2025 · 8 Oct 2025
  12. 3-spined sticklebackMimram 16River Kennet 4Latest evidence 25 Sept 2025 · 14 Oct 2025
  13. MinnowMimram 6River Kennet 11Latest evidence 13 Jul 2006 · 14 Oct 2025
  14. European eelMimram 1River Kennet 9Latest evidence 13 Sept 2007 · 8 Nov 2013
  15. Brook lampreyMimram 1River Kennet 7Latest evidence 21 Sept 2011 · 14 Oct 2025
  16. Pike varietiesMimram 1River Kennet 5Latest evidence 20 Aug 2024 · 1 Oct 2025
  17. RuddMimram 2River Kennet 3Latest evidence 11 Oct 2018 · 4 Nov 2022
  18. Brook lamprey > ammocoeteMimram 3River Kennet 1Latest evidence 2 Sept 2025 · 6 Oct 2023
  19. Common carp varietiesMimram 1River Kennet 3Latest evidence 4 Sept 2009 · 22 Oct 2015
  20. Golden goldfishMimram 1River Kennet 1Latest evidence 10 May 2006 · 12 Nov 2009

Only in the Mimram survey set

  1. 10-spined stickleback9 sites · latest 7 Feb 2019
  2. Brook lamprey ammocoetes3 sites · latest 7 Sept 2023
  3. Lamprey sp.1 site · latest 13 Jun 2006
  4. Rudd varieties1 site · latest 21 Sept 2010

Only in the River Kennet survey set

  1. Barbel22 sites · latest 25 Sept 2025
  2. Common bream19 sites · latest 25 Sept 2025
  3. Atlantic salmon14 sites · latest 25 Oct 2010
  4. Tench13 sites · latest 13 Nov 2024
  5. Roach x common bream hybrid12 sites · latest 25 Oct 2018
  6. Ruffe9 sites · latest 5 Nov 2022
  7. Rainbow trout8 sites · latest 8 Oct 2024
  8. Common [wild] carp5 sites · latest 24 Oct 2018
  9. European eels > elvers5 sites · latest 10 Oct 2025
  10. Mirror carp4 sites · latest 4 Nov 2008
  11. Silver bream3 sites · latest 4 Nov 2022

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
Open the source dataset ↗Check live rules ↗