RiverFish

Minnow · Phoxinus phoxinus

Minnow in the Main River Coly

Largest measured minnow: 10.5 cm

The largest minnow measured in Environment Agency surveys of the Main River Coly was 10.5 cm, recorded at Upstream Colyford (Sp) on 16 May 2022.

Across 366 measured minnow, the median measured length was 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 Main River Coly.

See minnow records across England →

Most recent observation11 July 2025Upstream Cadhayne (Te) · 3 fish
Largest measured minnow
10.5 cm
Median length
6 cm
Fish measured
366
Survey locations
8

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
10.5 cm16 May 2022Upstream Colyford (Sp)160944
9.5 cm16 May 2022Upstream Colyford (Sp)160944
9.1 cm16 May 2022Upstream Colyford (Sp)160944
9 cm16 May 2022Upstream Colyford (Sp)160944
9 cm15 Jun 2021Upstream Cadhayne (Te)159923
8.9 cm16 May 2022Upstream Colyford (Sp)160944
8.9 cm16 May 2022Upstream Colyford (Sp)160944
8.7 cm16 May 2022Upstream Cadhayne (Te)161081
8.6 cm16 May 2022Upstream Colyford (Sp)160944
8.5 cm16 May 2022Upstream Cadhayne (Te)161081

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
Upstream Cadhayne (Te)7 Jul 201611 Jul 20257
Downstream FT BR Cadhayne (5 min)30 Jun 202330 May 20242
Upstream Colyford (5 min)29 Jun 202324 May 20242
Colemans Cross (5 min)28 Jun 202324 May 20242
Upstream Colyford (Sp)18 Jul 199729 Jun 20238
Woodbridge (Sp)18 Jul 199731 May 20238
Upstream Southleigh Str6 May 20206 May 20201
Heathayne (Te)*22 Jul 19977 Jun 201111

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

1997–2025

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 366 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
5.1 cm
Median
6 cm
Upper quarter
7 cm
Largest
10.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main River Coly

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

Brown / sea trout Bullhead Stone loach European eel Atlantic salmon

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 →