RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Sapiston (Black Bourn)

Largest measured minnow: 8.4 cm

The largest minnow measured in Environment Agency surveys of the River Sapiston (Black Bourn) was 8.4 cm, recorded at Bailey Pool Bridge on 3 September 2012.

Across 269 measured minnow, the median measured length was 5.7 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Sapiston (Black Bourn).

See minnow records across England →

Most recent observation28 August 2024Euston · 4 fish
Largest measured minnow
8.4 cm
Median length
5.7 cm
Fish measured
269
Survey locations
10

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
8.4 cm3 Sept 2012Bailey Pool Bridge133174
8.3 cm21 Aug 2024Bullbridge166456
8.3 cm30 Oct 1995Euston30074
8.1 cm21 Aug 2024Bullbridge166456
8 cm15 Aug 2012Bullbridge132846
7.9 cm21 Aug 2024Bullbridge166456
7.7 cm14 Aug 2012Euston132845
7.5 cm21 Aug 2024Bullbridge166456
7.5 cm25 Oct 2018Bullbridge154186
7.4 cm25 Oct 2018Bullbridge154186

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
Euston14 Jul 198828 Aug 20247
Bailey Pool Bridge20 Aug 200922 Aug 20244
Bullbridge15 Aug 201221 Aug 20243
Sapiston Bridge3 Apr 19897 Sept 20123
Black Bridge6 Sept 20126 Sept 20121
Micklemere26 Aug 20094 Sept 20122
Burnthall Plantation26 Oct 199526 Oct 19951
US Burnthall Plantation24 Oct 199524 Oct 19951
Ixworth Mill17 Oct 199517 Oct 19951
Bardwell Mill16 Oct 199516 Oct 19951

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

1988–2024

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 269 measured fish were spread across different length ranges.

Smallest
2.1 cm
Lower quarter
5.2 cm
Median
5.7 cm
Upper quarter
6.3 cm
Largest
8.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Sapiston (Black Bourn)

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

Dace Roach Gudgeon Pike Chub European eel

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 →