Individual EA measurements
Largest measured perch
The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.
| Length | Survey date | Survey location | Survey ID |
|---|---|---|---|
| 37.6 cm | 14 Apr 2010 | Cliftons Bridge | 123186 |
| 36.1 cm | 2 Apr 2025 | Cliftons Bridge | 176158 |
| 36 cm | 2 Apr 2025 | Cliftons Bridge | 176158 |
| 35.4 cm | 3 Apr 2025 | Foremans Bridge | 176159 |
| 35.4 cm | 2 Apr 2025 | Cliftons Bridge | 176158 |
| 35.4 cm | 1 Apr 2025 | Coy Sluice | 176157 |
| 32.3 cm | 6 Jun 2012 | Coy Sluice | 134640 |
| 32.2 cm | 2 Apr 2025 | Cliftons Bridge | 176158 |
| 31.9 cm | 26 Apr 2007 | Foremans Bridge | 105462 |
| 28.4 cm | 14 Apr 2008 | Foremans Bridge | 110697 |
Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.
Explore the river
Where perch were found
Each point marks a survey location with at least one perch record.
Choose a point on the map to see what was recorded there.
Map points are approximate and don’t show fishing access. Check local permissions before visiting.
| Place surveyed | First recorded | Last recorded | Visits finding perch |
|---|---|---|---|
| Foremans Bridge | 22 Mar 2006 | 3 Apr 2025 | 7 |
| Cliftons Bridge | 7 May 1986 | 2 Apr 2025 | 12 |
| Coy Sluice | 13 Jun 2001 | 1 Apr 2025 | 12 |
| Shell Bridge | 15 Apr 1986 | 26 Mar 2025 | 10 |
| Red House Bridge | 22 Mar 2006 | 7 Apr 2011 | 2 |
| Leedsgate Bridge | 8 Jan 1988 | 5 Apr 2011 | 5 |
| Peak Hill | 1 Apr 2011 | 1 Apr 2011 | 1 |
| Upstream Wisemans Pumping Station | 5 Jan 1988 | 21 Mar 2011 | 2 |
| Red House Farm | 6 Mar 2006 | 6 Mar 2006 | 1 |
| Donnington Pumping Station? | 6 Mar 2006 | 6 Mar 2006 | 1 |
| Sharps Bridge (South Holland Drain) | 7 Oct 1997 | 20 Jun 2001 | 2 |
| Downstream Coy Sluice | 7 Jan 1988 | 13 Jun 2001 | 2 |
| Upstream Coy Sluice | 4 Jun 1997 | 4 Jun 1997 | 1 |
| Bells Bridge | 12 Jan 1988 | 12 Jan 1988 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1986–2025
Survey records by year
Each bar shows how many survey visits recorded perch that year.
Fish measured by surveyors
Measured length distribution
See how the 2,057 measured fish were spread across different length ranges.
- Smallest
- 3 cm
- Lower quarter
- 7.2 cm
- Median
- 8.1 cm
- Upper quarter
- 9.8 cm
- Largest
- 37.6 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the South Holland Main Drain
Compare other species with enough survey and measurement data for a detailed page.
Before you fish
Good to know
These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.
Learn how RiverFish uses the data →