Historic monitoring evidence · Environment Agency
Polstead Mill
East Anglia · survey site
This page records ecological survey evidence. It is not proof of current fish presence, abundance, fishing quality, access, permission or safety at this location.
Observed taxa
What monitoring recorded here
Taxa are ordered by latest survey date. Counts and records reflect monitoring events, not an angling forecast.
Brown / sea trout
Salmo trutta- First record
- 27 Mar 1985
- Latest record
- 11 Jun 2024
- Survey events
- 11
Dace
Leuciscus leuciscus- First record
- 27 Mar 1985
- Latest record
- 11 Jun 2024
- Survey events
- 11
European eels > elvers
Anguilla anguilla- First record
- 27 Mar 1985
- Latest record
- 11 Jun 2024
- Survey events
- 11
Minnow
Phoxinus phoxinus- First record
- 27 Mar 1985
- Latest record
- 11 Jun 2024
- Survey events
- 11
Stone loach
Barbatula barbatula- First record
- 27 Mar 1985
- Latest record
- 11 Jun 2024
- Survey events
- 11
Gudgeon
Gobio gobio- First record
- 27 Mar 1985
- Latest record
- 11 Jun 2024
- Survey events
- 8
Rudd
Scardinius erythrophthalmus- First record
- 27 Mar 1985
- Latest record
- 11 Jun 2024
- Survey events
- 8
3-spined stickleback
Gasterosteus aculeatus- First record
- 9 May 1997
- Latest record
- 11 Jun 2024
- Survey events
- 6
Roach
Rutilus rutilus- First record
- 27 Mar 1985
- Latest record
- 17 May 2018
- Survey events
- 9
Rainbow trout
Oncorhynchus mykiss- First record
- 27 Mar 1985
- Latest record
- 17 May 2018
- Survey events
- 2
Chub
Leuciscus cephalus- First record
- 27 Mar 1985
- Latest record
- 28 Apr 2015
- Survey events
- 8
Feral [brown] goldfish
Carassius auratus- First record
- 22 May 2012
- Latest record
- 22 May 2012
- Survey events
- 1
Roach x common bream hybrid
Rutilus rutilus x Abramis brama- First record
- 22 May 2012
- Latest record
- 22 May 2012
- Survey events
- 1
Common [wild] carp
Cyprinus carpio- First record
- 16 Apr 1991
- Latest record
- 16 Apr 1991
- Survey events
- 1
Pike
Esox lucius- First record
- 13 Apr 1988
- Latest record
- 13 Apr 1988
- Survey events
- 1
Rules and access
Check before you travel.
Environment Agency ecology records do not carry fishing-rights boundaries or live restrictions. Confirm the fishery owner, permission, local byelaws, seasonal rules, safety notices and current conditions before setting out.
Check live freshwater fishing rulesProvenance
Source, licence and boundary
- SourceEnvironment Agency Ecology & Fish Data
- LicenceOpen Government Licence v3.0
- Source copy retrieved23 Jul 2026
- Terms checked23 Jul 2026
- CoverageHistoric monitoring evidence, separately dated per record
- Not assertedCurrent presence, access, permission, fishing quality or safety