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 |
|---|---|---|---|
| 33.1 cm | 8 Jun 2006 | Moredon Bridge | 90919 |
| 32.5 cm | 8 Jun 2006 | Moredon Bridge | 90919 |
| 29.5 cm | 20 Apr 2005 | Moredon Bridge | 84480 |
| 27.1 cm | 8 Apr 2004 | Moredon Bridge | 79607 |
| 25.5 cm | 8 Apr 2004 | Moredon Bridge | 79607 |
| 24.5 cm | 8 Jun 2006 | Moredon Bridge | 90919 |
| 24.3 cm | 20 Apr 2005 | Moredon Bridge | 84480 |
| 24.1 cm | 20 Apr 2005 | Moredon Bridge | 84480 |
| 23.7 cm | 21 Apr 2005 | Water Eaton, d/s gauging weir | 84502 |
| 23.5 cm | 8 Apr 2004 | Moredon Bridge | 79607 |
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 |
|---|---|---|---|
| Moredon Bridge | 8 Apr 2004 | 30 Aug 2022 | 5 |
| Sparcells d/s STW | 20 Apr 2005 | 13 Jun 2006 | 2 |
| Westmead industrial estate - u/s STW | 22 Apr 2005 | 22 Apr 2005 | 1 |
| Seven Bridges | 27 Apr 2004 | 22 Apr 2005 | 2 |
| Water Eaton, d/s gauging weir | 21 Apr 2005 | 21 Apr 2005 | 1 |
| Upstream Swindon STW | 21 Apr 2004 | 21 Apr 2004 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
2004–2022
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 327 measured fish were spread across different length ranges.
- Smallest
- 6.8 cm
- Lower quarter
- 9.3 cm
- Median
- 11.4 cm
- Upper quarter
- 14.1 cm
- Largest
- 33.1 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the River Ray
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 →