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 |
|---|---|---|---|
| 16.4 cm | 2 Sept 2003 | Carr Lane | 78024 |
| 16 cm | 26 Jun 2001 | Below Croston Weir | 90429 |
| 15.9 cm | 3 Jul 2003 | Carr Lane | 77948 |
| 15.7 cm | 21 Aug 2001 | Downstream A6 | 90042 |
| 15.6 cm | 28 Aug 2002 | Downstream A6 | 79659 |
| 15.5 cm | 28 Aug 2002 | Downstream A6 | 79659 |
| 15.2 cm | 26 Jun 2001 | Below Croston Weir | 90429 |
| 15.2 cm | 26 Jun 2001 | Below Croston Weir | 90429 |
| 14.9 cm | 21 Aug 2001 | Downstream A6 | 90042 |
| 14.6 cm | 21 Aug 2001 | Downstream A6 | 90042 |
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 |
|---|---|---|---|
| Below Croston Weir | 5 Jul 1995 | 5 Jul 2023 | 5 |
| Downstream A6 | 13 Aug 1991 | 4 Sept 2013 | 12 |
| Common Bank Lane | 12 Jul 2011 | 12 Jul 2011 | 1 |
| ptc Black Brook (Hoggs Lane) | 31 Aug 2007 | 31 Aug 2007 | 1 |
| Carr Lane | 4 Jul 1995 | 2 Sept 2003 | 4 |
| Plymouth Bridge | 4 Jul 1995 | 3 Jul 2001 | 2 |
| Birkacre | 4 Jul 1995 | 19 Jun 2001 | 2 |
| Pincock Bridge | 4 Jul 1995 | 9 Aug 2000 | 2 |
| Eccleston Bridge | 5 Jul 1995 | 5 Jul 1995 | 1 |
| Downstream M6 | 5 Jul 1995 | 5 Jul 1995 | 1 |
| Grundy's House | 4 Jul 1995 | 4 Jul 1995 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1991–2023
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 156 measured fish were spread across different length ranges.
- Smallest
- 3.5 cm
- Lower quarter
- 10.5 cm
- Median
- 12 cm
- Upper quarter
- 13 cm
- Largest
- 16.4 cm
Lengths are direct survey measurements rather than anglers’ catches.
Fish weighed by surveyors
Measured weight summary
Recorded weights were available for 4 gudgeon. This is a subset of the measured fish and may not represent the whole population.
- Lightest
- 0.4 oz (0.01 kg)
- Lower quarter
- 1.1 oz (0.0318 kg)
- Median
- 1.4 oz (0.0405 kg)
- Upper quarter
- 1.5 oz (0.0435 kg)
- Heaviest
- 1.7 oz (0.048 kg)
These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.
More fish in this river
Explore the River Yarrow
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 →