Individual EA measurements
Largest measured minnow
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 |
|---|---|---|---|
| 10.9 cm | 22 Jun 2017 | Waterside Way | 150620 |
| 9.5 cm | 1 Jul 2015 | Sainsburys Merton | 145446 |
| 9.5 cm | 25 Jun 2015 | Mapleton Road | 145183 |
| 9.3 cm | 1 Jul 2015 | Sainsburys Merton | 145446 |
| 9.2 cm | 1 Jul 2015 | Sainsburys Merton | 145446 |
| 9.1 cm | 1 Jul 2015 | Sainsburys Merton | 145446 |
| 9.1 cm | 1 Jul 2015 | Sainsburys Merton | 145446 |
| 9 cm | 1 Jul 2015 | Sainsburys Merton | 145446 |
| 8.8 cm | 25 Jun 2015 | Mapleton Road | 145183 |
| 8.6 cm | 1 Jul 2015 | Sainsburys Merton | 145446 |
Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.
Explore the river
Where minnow were found
Each point marks a survey location with at least one minnow 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 minnow |
|---|---|---|---|
| Mapleton Road | 6 Jun 2013 | 7 Oct 2025 | 5 |
| Waterside Way | 8 Jun 2011 | 2 Oct 2025 | 6 |
| Sainsburys Merton | 1 Jul 2015 | 1 Oct 2025 | 3 |
| Ravensbury Park | 30 Sept 2025 | 30 Sept 2025 | 1 |
| Church Road | 7 Jul 2021 | 7 Jul 2021 | 1 |
| Butterhill | 13 Jun 2013 | 1 Jul 2021 | 2 |
| Trewint Street - Weir Road | 9 Jun 2011 | 30 Jun 2015 | 3 |
| King George Park | 11 Jun 2013 | 11 Jun 2013 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
2011–2025
Survey records by year
Each bar shows how many survey visits recorded minnow that year.
Fish measured by surveyors
Measured length distribution
See how the 59 measured fish were spread across different length ranges.
- Smallest
- 2.2 cm
- Lower quarter
- 6.3 cm
- Median
- 7.6 cm
- Upper quarter
- 8.3 cm
- Largest
- 10.9 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the River Wandle
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 →