RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Box (Main Reaches)

Largest measured minnow: 9.6 cm

The largest minnow measured in Environment Agency surveys of the River Box (Main Reaches) was 9.6 cm, recorded at Polstead Ford on 13 May 1997.

Across 1,787 measured minnow, the median measured length was 5.8 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 Box (Main Reaches).

See minnow records across England →

Most recent observation22 May 2026Stour Confluence · 125 fish
Largest measured minnow
9.6 cm
Median length
5.8 cm
Fish measured
1,787
Survey locations
5

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
9.6 cm13 May 1997Polstead Ford13803
9.5 cm18 May 2006Scotland Street100291
9.4 cm22 May 2012Polstead Mill132316
9.2 cm13 Apr 1988Polstead Mill13782
9.1 cm11 Jun 2024Polstead Mill165732
9.1 cm17 May 2018Polstead Mill152674
9.1 cm17 May 2018Polstead Mill152674
9.1 cm22 May 2012Polstead Mill132316
9.1 cm4 May 1994Polstead Ford13796
9 cm17 May 2018Polstead Mill152674

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
Stour Confluence15 May 200622 May 202611
Scotland Street15 Apr 198821 May 202614
Polstead Mill27 Mar 198511 Jun 202411
Thorington Mill25 Mar 19858 May 20249
Polstead Ford14 Apr 19887 May 20249

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

1985–2026

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 1,787 measured fish were spread across different length ranges.

Smallest
2.4 cm
Lower quarter
5.1 cm
Median
5.8 cm
Upper quarter
6.7 cm
Largest
9.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Box (Main Reaches)

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

European eel Brown / sea trout Stone loach Dace Roach Chub

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 →