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 |
|---|---|---|---|
| 15.9 cm | 24 Nov 1983 | Warren Bridge | 62000 |
| 15.4 cm | 24 Nov 1983 | Warren Bridge | 62000 |
| 15.2 cm | 24 Nov 1983 | Warren Bridge | 62000 |
| 15.1 cm | 9 Jan 1987 | Warren Bridge | 14504 |
| 15.1 cm | 24 Nov 1983 | Warren Bridge | 62000 |
| 15.1 cm | 24 Nov 1983 | Warren Bridge | 62000 |
| 14.9 cm | 23 Nov 1989 | Warren Bridge | 14507 |
| 14.7 cm | 23 Nov 1989 | Warren Bridge | 14507 |
| 14.6 cm | 9 Jan 1987 | Warren Bridge | 14504 |
| 14.6 cm | 24 Nov 1983 | Warren Bridge | 62000 |
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 |
|---|---|---|---|
| Admirals Park | 23 Nov 1983 | 17 Oct 2025 | 10 |
| Warren Bridge | 24 Nov 1983 | 14 Oct 2013 | 9 |
| Central Park | 30 Jan 1987 | 1 Oct 2013 | 7 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1983–2025
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 389 measured fish were spread across different length ranges.
- Smallest
- 3.2 cm
- Lower quarter
- 8.8 cm
- Median
- 10.8 cm
- Upper quarter
- 12.1 cm
- Largest
- 15.9 cm
Lengths are direct survey measurements rather than anglers’ catches.
Fish weighed by surveyors
Measured weight summary
One individual weight was recorded for this fish and river. This is a subset of the measured fish and may not represent the whole population.
- Recorded weight
- 0.6 oz (0.016 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 Can (Main Reaches)
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 →