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 |
|---|---|---|---|
| 33.4 cm | 29 Apr 2009 | Boston Corporation Farm | 117270 |
| 32.2 cm | 26 Sept 2019 | Upstream Lade Bank Pump | 156030 |
| 31.8 cm | 13 Oct 1987 | Midville Bridge Upstream | 57811 |
| 31.6 cm | 29 Apr 2009 | Boston Corporation Farm | 117270 |
| 31.4 cm | 13 Oct 1987 | Midville Bridge Upstream | 57811 |
| 31.1 cm | 12 Jul 1993 | Ings Bridge | 57827 |
| 31 cm | 13 Jul 1993 | Frieston Bridge | 57828 |
| 29.2 cm | 7 May 2009 | Simmons House Farm | 117225 |
| 27.3 cm | 7 May 2009 | Simmons House Farm | 117225 |
| 25.3 cm | 10 Aug 2007 | Midville Bridge Upstream | 106302 |
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 |
|---|---|---|---|
| Simmons House Farm | 7 Jul 1993 | 27 Sept 2019 | 7 |
| Upstream Lade Bank Pump | 20 Nov 1987 | 26 Sept 2019 | 8 |
| Boston Corporation Farm | 7 Oct 1987 | 19 Sept 2019 | 9 |
| Bennington Bridge | 8 Jul 1993 | 4 Nov 2016 | 5 |
| Downstream Bakers Bridge | 19 Sept 2013 | 19 Sept 2013 | 1 |
| Midville Bridge Upstream | 13 Oct 1987 | 10 Aug 2007 | 6 |
| Ings Bridge | 12 Jul 1993 | 10 Jul 1996 | 2 |
| Lade Bank Bridge | 8 Jul 1996 | 8 Jul 1996 | 1 |
| Frieston Bridge | 13 Jul 1993 | 13 Jul 1993 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1987–2019
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 2,183 measured fish were spread across different length ranges.
- Smallest
- 3.8 cm
- Lower quarter
- 6.4 cm
- Median
- 7.7 cm
- Upper quarter
- 9 cm
- Largest
- 33.4 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the Hobhole 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 →