RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Colne

Largest measured minnow: 9.7 cm

The largest minnow measured in Environment Agency surveys of the River Colne was 9.7 cm, recorded at Brook Street Farm on 14 June 2023.

Across 3,188 measured minnow, the median measured length was 5.6 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 Colne.

See minnow records across England →

Most recent observation16 June 2026Blue Bridge · 143 fish
Largest measured minnow
9.7 cm
Median length
5.6 cm
Fish measured
3,188
Survey locations
20

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
9.7 cm14 Jun 2023Brook Street Farm162733
9.4 cm30 Nov 2011Upstream A12 Bridge (Silver eel)129945
9.4 cm26 May 2011Broom House126418
9.3 cm30 Apr 1999Wakes Colne Viaduct14010
9.2 cm2 May 2014Broom House140743
9 cm14 Jun 2023Brook Street Farm162733
9 cm30 Nov 2011Upstream A12 Bridge (Silver eel)129945
8.9 cm14 Jun 2023Brook Street Farm162733
8.9 cm23 May 2001Wakes Colne Viaduct15590
8.8 cm14 May 2014Chalkney Mill141104

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
Blue Bridge13 Jun 201716 Jun 20263
Brook Street Farm14 Jun 202310 Jun 20262
Box Mill12 Jun 20173 Jun 20263
Wakes Colne Viaduct2 May 19962 Jun 202617
Fordstreet13 Aug 198714 May 202612
Spring Lane26 Jul 19907 May 202617
Earls Colne FGS19 May 20056 May 20268
Cooks Mill18 Jun 200228 Apr 20266
Downstream New Bridge6 Aug 19878 Jun 202310
Broom House20 May 20057 Jun 20235
Chalkney Mill14 May 20142 Jun 20232
Cricket Ground7 Apr 199924 May 202311
Upstream A12 Bridge (Silver eel)30 Nov 20116 Jan 20124
Lexden FGS Upstream (Silver eel)1 Dec 20116 Jan 20124
Swanscombe Farm3 May 199618 Jun 20085
Fiddlers Mill20 Jun 20022 Jun 20083
Upstream A12 Bridge31 Jul 199013 May 20086
Bathing Pool13 May 20029 May 20083
Castle Park6 Apr 19997 May 20082
North Bridge8 Apr 199911 May 20043

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

1987–2026

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 3,188 measured fish were spread across different length ranges.

Smallest
1.5 cm
Lower quarter
4.8 cm
Median
5.6 cm
Upper quarter
6.2 cm
Largest
9.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Colne

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

Roach European eel Gudgeon Dace Pike Perch

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 →