Historic monitoring evidence · Environment Agency
Mareham-Le-Fen
Lincolnshire and Northamptonshire · 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.
Pike
Esox lucius- First record
- 21 May 1987
- Latest record
- 3 May 2016
- Survey events
- 6
European eels > elvers
Anguilla anguilla- First record
- 21 May 1987
- Latest record
- 3 May 2016
- Survey events
- 5
Tench
Tinca tinca- First record
- 21 May 1987
- Latest record
- 1 May 2013
- Survey events
- 3
Spined loach
Cobitis taenia- First record
- 9 May 2000
- Latest record
- 1 May 2013
- Survey events
- 3
Stone loach
Barbatula barbatula- First record
- 19 Mar 2012
- Latest record
- 1 May 2013
- Survey events
- 2
Tench varieties
Tinca tinca- First record
- 19 Mar 2012
- Latest record
- 19 Mar 2012
- Survey events
- 1
Pike varieties
Esox lucius- First record
- 19 Mar 2012
- Latest record
- 19 Mar 2012
- Survey events
- 1
Roach
Rutilus rutilus- First record
- 21 May 1987
- Latest record
- 9 May 2000
- Survey events
- 3
Perch
Perca fluviatilis- First record
- 14 Apr 1993
- Latest record
- 9 May 2000
- Survey events
- 2
Dace
Leuciscus leuciscus- First record
- 21 May 1987
- Latest record
- 14 Apr 1993
- Survey events
- 2
Gudgeon
Gobio gobio- First record
- 21 May 1987
- Latest record
- 14 Apr 1993
- Survey events
- 2
Ruffe
Gymnocephalus cernuus- First record
- 21 May 1987
- Latest record
- 21 May 1987
- 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