RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Main Plym

Largest measured minnow: 7.8 cm

The largest minnow measured in Environment Agency surveys of the River Main Plym was 7.8 cm, recorded at Plym Bridge on 28 June 2023.

Across 78 measured minnow, the median measured length was 5.5 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 Main Plym.

See minnow records across England →

Most recent observation4 July 2025Great Shaugh Wood · 28 fish
Largest measured minnow
7.8 cm
Median length
5.5 cm
Fish measured
78
Survey locations
3

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
7.8 cm28 Jun 2023Plym Bridge164449
7.6 cm28 Jun 2019Plym Bridge155123
7.2 cm28 Jun 2019Plym Bridge155123
7.1 cm28 Jun 2023Plym Bridge164449
6.8 cm28 Jun 2019Plym Bridge155123
6.7 cm20 Jun 2025Plym Bridge177036
6.5 cm28 Jun 2023Plym Bridge164449
6.4 cm4 Jul 2025Great Shaugh Wood177576
6.4 cm28 Jun 2023Plym Bridge164449
6.4 cm28 Jun 2023Colwill Wood163931

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
Great Shaugh Wood28 Jun 20234 Jul 20252
Plym Bridge9 Jul 199820 Jun 20256
Colwill Wood28 Jun 202328 Jun 20231

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

1998–2025

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 78 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
5.1 cm
Median
5.5 cm
Upper quarter
5.8 cm
Largest
7.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Plym

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

European eel Brown / sea trout Atlantic salmon Bullhead Flounder

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 →