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 |
|---|---|---|---|
| 9.3 cm | 8 Apr 2015 | Forty Hall | 144536 |
| 9.3 cm | 29 Sept 2014 | Forty Hall | 143178 |
| 9.3 cm | 16 Apr 2014 | Forty Hall | 140665 |
| 8.9 cm | 16 Apr 2014 | Forty Hall | 140665 |
| 8.9 cm | 16 Apr 2014 | Forty Hall | 140665 |
| 8.6 cm | 20 Oct 2015 | Forty Hall | 147258 |
| 8.6 cm | 29 Sept 2014 | Forty Hall | 143178 |
| 8.6 cm | 4 Apr 2014 | Albany Park | 140631 |
| 8.4 cm | 8 Apr 2015 | Forty Hall | 144536 |
| 8.4 cm | 8 Apr 2015 | Forty Hall | 144536 |
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 |
|---|---|---|---|
| Forty Hall | 4 May 2006 | 30 Jun 2026 | 9 |
| Whitewebbs Golf Course | 13 Dec 2013 | 21 Oct 2019 | 5 |
| Albany Park | 4 Dec 2013 | 21 Oct 2019 | 5 |
| 12th T at Golf Club | 16 May 2006 | 31 Oct 2018 | 3 |
| Upstream Albany Park | 9 Oct 2017 | 9 Oct 2017 | 1 |
| d/s Cuffley Brook confluence | 16 Apr 2014 | 5 Oct 2015 | 4 |
| Rotenone neutralisation zone 2 | 27 Nov 2013 | 27 Nov 2013 | 1 |
| Rotenone neutralisation zone | 27 Nov 2013 | 27 Nov 2013 | 1 |
| Forty Hall TMG | 26 Mar 2009 | 20 Apr 2010 | 2 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
2006–2026
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 755 measured fish were spread across different length ranges.
- Smallest
- 1.1 cm
- Lower quarter
- 3.7 cm
- Median
- 5.1 cm
- Upper quarter
- 6.2 cm
- Largest
- 9.3 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the Turkey Brook
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 →