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 |
|---|---|---|---|
| 30.5 cm | 13 May 2014 | Downstream Chess Bridge | 140777 |
| 24.1 cm | 30 Aug 2002 | Park Farm | 63580 |
| 20.2 cm | 13 May 2014 | Downstream Chess Bridge | 140777 |
| 17.8 cm | 13 May 2014 | Downstream Chess Bridge | 140777 |
| 16.3 cm | 14 Sept 2007 | Park Farm | 107269 |
| 15.2 cm | 19 Sept 2007 | Parsonage Wood | 107234 |
| 15 cm | 19 Sept 2007 | Parsonage Wood | 107234 |
| 14.8 cm | 19 Sept 2007 | Parsonage Wood | 107234 |
| 14.7 cm | 19 Sept 2007 | Parsonage Wood | 107234 |
| 14.5 cm | 19 Sept 2007 | Parsonage Wood | 107234 |
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 |
|---|---|---|---|
| Downstream Chess Bridge | 13 May 2014 | 13 May 2014 | 1 |
| Parsonage Wood | 5 Oct 2004 | 19 Sept 2007 | 2 |
| Park Farm | 30 Aug 2002 | 14 Sept 2007 | 2 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
2002–2014
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 39 measured fish were spread across different length ranges.
- Smallest
- 6 cm
- Lower quarter
- 8.2 cm
- Median
- 12.9 cm
- Upper quarter
- 14.5 cm
- Largest
- 30.5 cm
Lengths are direct survey measurements rather than anglers’ catches.
Fish weighed by surveyors
Measured weight summary
Recorded weights were available for 27 perch. This is a subset of the measured fish and may not represent the whole population.
- Lightest
- 0.1 oz (0.004 kg)
- Lower quarter
- 0.9 oz (0.0265 kg)
- Median
- 1.3 oz (0.038 kg)
- Upper quarter
- 1.7 oz (0.047 kg)
- Heaviest
- 8.4 oz (0.238 kg)
These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.
More fish in this river
Explore the Chess Stream
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 →