Individual EA measurements
Largest measured gudgeon
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 |
|---|---|---|---|
| 19 cm | 29 Sept 2004 | A21S Top of Bickerley Millstream | 82565 |
| 15.4 cm | 24 Sept 2013 | Bickerley Mill Stream | 139171 |
| 14.3 cm | 24 Sept 2013 | A21S Top of Bickerley Millstream | 139113 |
| 14.1 cm | 30 Sept 2011 | Bickerley Mill Stream | 128766 |
| 14.1 cm | 6 Oct 2005 | Bickerley Mill Stream | 86638 |
| 14.1 cm | 6 Oct 2005 | Bickerley Mill Stream | 86638 |
| 14 cm | 31 Jul 2014 | Bickerley Mill Stream | 142265 |
| 14 cm | 10 Oct 2006 | Bickerley Mill Stream | 101832 |
| 13.9 cm | 24 Sept 2013 | Bickerley Mill Stream | 139171 |
| 13.8 cm | 24 Sept 2013 | Bickerley Mill Stream | 139171 |
Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.
Explore the river
Where gudgeon were found
Each point marks a survey location with at least one gudgeon 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 gudgeon |
|---|---|---|---|
| Bickerley Mill Stream | 14 Sept 2001 | 7 Oct 2022 | 13 |
| A21S Top of Bickerley Millstream | 29 Sept 2004 | 24 Sept 2013 | 2 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
2001–2022
Survey records by year
Each bar shows how many survey visits recorded gudgeon that year.
Fish measured by surveyors
Measured length distribution
See how the 413 measured fish were spread across different length ranges.
- Smallest
- 5.5 cm
- Lower quarter
- 9.8 cm
- Median
- 11.1 cm
- Upper quarter
- 12 cm
- Largest
- 19 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the Bickerley Mill 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 →