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 |
|---|---|---|---|
| 36.8 cm | 2 Jun 1997 | Martins Nest Bridge A | 13863 |
| 36.2 cm | 2 Jun 1997 | Martins Nest Bridge A | 13863 |
| 34.3 cm | 2 Jun 1997 | Martins Nest Bridge A | 13863 |
| 34.1 cm | 26 May 1994 | Martins Nest Bridge A | 13856 |
| 34 cm | 2 Jun 1997 | Martins Nest Bridge A | 13863 |
| 34 cm | 6 Mar 1985 | Boxted Hall | 13839 |
| 33.5 cm | 19 Jun 2000 | Boxted Hall | 15511 |
| 33.4 cm | 2 Jun 1997 | Martins Nest Bridge A | 13863 |
| 33.3 cm | 1 Mar 1985 | Moorhouse Farm | 13840 |
| 33.2 cm | 19 Jun 1997 | Boxted Hall | 13867 |
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 |
|---|---|---|---|
| Boxted Hall | 6 Mar 1985 | 14 Jun 2024 | 9 |
| Martins Nest Bridge A | 11 May 1988 | 5 Jul 2012 | 6 |
| Moorhouse Farm | 1 Mar 1985 | 16 Jun 2006 | 5 |
| Scotchford Bridge | 8 Jun 2006 | 8 Jun 2006 | 1 |
| Mill Farm Glemsford | 9 May 1988 | 7 Jun 2006 | 4 |
| Parsonage Farm | 6 Jun 1997 | 6 Jun 2000 | 2 |
| Martins Nest Bridge B | 15 Sept 1981 | 15 Sept 1981 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1981–2024
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 534 measured fish were spread across different length ranges.
- Smallest
- 6 cm
- Lower quarter
- 10.8 cm
- Median
- 12.1 cm
- Upper quarter
- 17.4 cm
- Largest
- 36.8 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the River Glem
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 →