Historic monitoring evidence · Environment Agency
Hallards Fen
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.
Roach
Rutilus rutilus- First record
- 26 Sept 1984
- Latest record
- 20 Jun 2014
- Survey events
- 8
Perch
Perca fluviatilis- First record
- 26 Sept 1984
- Latest record
- 20 Jun 2014
- Survey events
- 7
Pike
Esox lucius- First record
- 26 Sept 1984
- Latest record
- 20 Jun 2014
- Survey events
- 7
European eels > elvers
Anguilla anguilla- First record
- 26 Sept 1984
- Latest record
- 20 Jun 2014
- Survey events
- 7
Bitterling
Rhodeus sericeus- First record
- 26 Sept 1984
- Latest record
- 20 Jun 2014
- Survey events
- 7
Rudd
Scardinius erythrophthalmus- First record
- 26 Sept 1984
- Latest record
- 20 Jun 2014
- Survey events
- 6
Ruffe
Gymnocephalus cernuus- First record
- 26 Sept 1984
- Latest record
- 20 Jun 2014
- Survey events
- 6
Tench
Tinca tinca- First record
- 26 Sept 1984
- Latest record
- 20 Jun 2014
- Survey events
- 6
3-spined stickleback
Gasterosteus aculeatus- First record
- 20 Jun 2014
- Latest record
- 20 Jun 2014
- Survey events
- 1
Common bream
Abramis brama- First record
- 26 Sept 1984
- Latest record
- 16 Jul 2010
- Survey events
- 6
Roach x common bream hybrid
Rutilus rutilus x Abramis brama- First record
- 26 Sept 1984
- Latest record
- 16 Jul 2010
- Survey events
- 6
Silver bream
Abramis bjoerkna- First record
- 26 Sept 1984
- Latest record
- 16 Jul 2010
- Survey events
- 5
Bleak
Alburnus alburnus- First record
- 26 Sept 1984
- Latest record
- 16 Jul 2010
- Survey events
- 4
Mirror carp
Cyprinus carpio- First record
- 16 Jul 2010
- Latest record
- 16 Jul 2010
- Survey events
- 1
Dace
Leuciscus leuciscus- First record
- 29 May 1997
- Latest record
- 29 May 1997
- Survey events
- 1
Gudgeon
Gobio gobio- First record
- 26 Sept 1984
- Latest record
- 13 May 1993
- Survey events
- 4
Crucian carp
Carassius carassius- First record
- 13 May 1993
- Latest record
- 13 May 1993
- Survey events
- 1
Zander
Sander lucioperca- First record
- 13 May 1993
- Latest record
- 13 May 1993
- 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