RiverFish

Minnow · Phoxinus phoxinus

Minnow in the Boulters Weir Stream

Largest measured minnow: 8 cm

The largest minnow measured in Environment Agency surveys of the Boulters Weir Stream was 8 cm, recorded at Boulters Weir Upstream Fry on 30 August 2005.

Across 1,892 measured minnow, the median measured length was 3.4 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Boulters Weir Stream.

See minnow records across England →

Most recent observation4 September 2025Boulters Weir Upstream Fry · 352 fish
Largest measured minnow
8 cm
Median length
3.4 cm
Fish measured
1,892
Survey locations
2

Individual EA measurements

Largest measured minnow

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
8 cm30 Aug 2005Boulters Weir Upstream Fry111784
7.7 cm4 Sept 2025Boulters Weir Upstream Fry178509
7.6 cm30 Aug 2005Boulters Weir Upstream Fry111784
7.6 cm30 Aug 2005Boulters Weir Upstream Fry111784
7.5 cm30 Aug 2005Boulters Weir Upstream Fry111784
7 cm18 Aug 2015Boulters Weir Downstream Fry146045
7 cm30 Aug 2005Boulters Weir Upstream Fry111784
7 cm30 Aug 2005Boulters Weir Upstream Fry111784
6.8 cm30 Aug 2005Boulters Weir Upstream Fry111784
6.8 cm30 Aug 2005Boulters Weir Upstream Fry111784

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 surveyedFirst recordedLast recordedVisits finding minnow
Boulters Weir Upstream Fry26 Aug 20034 Sept 202518
Boulters Weir Downstream Fry26 Aug 20034 Sept 202511

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

2003–2025

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 1,892 measured fish were spread across different length ranges.

Smallest
0.6 cm
Lower quarter
3 cm
Median
3.4 cm
Upper quarter
4.6 cm
Largest
8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Boulters Weir Stream

Compare other species with enough survey and measurement data for a detailed page.

Dace Roach Bleak Chub Gudgeon Bullhead

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 →