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 |
|---|---|---|---|
| 38.6 cm | 8 Jun 2006 | Thorpe Culvert | 100119 |
| 36.2 cm | 21 Jun 2007 | Upstream A52 Bridge | 105684 |
| 35.9 cm | 12 Aug 2009 | Firsby | 118892 |
| 35.2 cm | 29 Apr 2002 | Firsby | 72594 |
| 34.2 cm | 7 Aug 2007 | Thorpe Culvert | 106222 |
| 32.3 cm | 27 Aug 2004 | Thorpe Culvert | 81955 |
| 32.1 cm | 8 Jun 2006 | Thorpe Culvert | 100119 |
| 31.4 cm | 2 Aug 2007 | Firsby | 106185 |
| 31 cm | 7 Aug 2007 | Thorpe Culvert | 106222 |
| 30.8 cm | 21 Jun 2007 | Upstream A52 Bridge | 105684 |
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 |
|---|---|---|---|
| Crows Bridge | 15 Sept 1987 | 3 May 2019 | 8 |
| Upstream A52 Bridge | 19 Apr 1996 | 15 Jul 2010 | 10 |
| Firsby | 18 Mar 1993 | 12 Aug 2009 | 10 |
| Thorpe Culvert | 16 Sept 1987 | 8 Jul 2009 | 10 |
| Upstream Wheel Doors | 28 Sept 1987 | 23 Apr 1996 | 3 |
| Whitehouse Farm | 24 Sept 1987 | 22 Apr 1996 | 3 |
| Downstream Salem Bridge | 22 Sept 1987 | 18 Apr 1996 | 3 |
| Firsby Clough | 9 Sept 1987 | 22 Mar 1993 | 2 |
| Steeping Outfall | 1 Oct 1987 | 1 Oct 1987 | 1 |
| Clough House Farm | 30 Sept 1987 | 30 Sept 1987 | 1 |
| Downstream Crows Bridge | 16 Sept 1987 | 16 Sept 1987 | 1 |
| Upstream Bycrofts Bridge | 14 Sept 1987 | 14 Sept 1987 | 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 5,657 measured fish were spread across different length ranges.
- Smallest
- 0.5 cm
- Lower quarter
- 6 cm
- Median
- 6.9 cm
- Upper quarter
- 9.2 cm
- Largest
- 38.6 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the River Steeping FMU
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 →