RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Main Penpont

Largest measured minnow: 7.9 cm

The largest minnow measured in Environment Agency surveys of the River Main Penpont was 7.9 cm, recorded at Trerithick on 23 June 2021.

Across 15 measured minnow, the median measured length was 6.7 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 Main Penpont.

See minnow records across England →

Most recent observation2 July 2025Trerithick · 1 fish
Largest measured minnow
7.9 cm
Median length
6.7 cm
Fish measured
15
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
7.9 cm23 Jun 2021Trerithick160450
7.8 cm23 Aug 2021Trekennick160444
7.7 cm23 Jun 2021Trerithick160450
7.5 cm2 Jul 2025Trerithick177294
6.9 cm23 Jun 2021Trerithick160450
6.8 cm23 Jun 2021Trerithick160450
6.7 cm23 Jun 2021Trerithick160450
6.7 cm23 Jun 2021Trerithick160450
6.5 cm23 Jun 2021Trerithick160450
6.5 cm23 Jun 2021Trerithick160450

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
Trerithick18 Jul 20072 Jul 20253
Trekennick23 Aug 202123 Aug 20211
d/s Finches Bridge (spawning bed C )21 Jun 200821 Jun 20081
Finches Bridge19 Jun 199620 Jul 20055
d/s Finches Bridge (spawning bed B)21 Jun 199621 Jun 19961

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

1996–2025

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 15 measured fish were spread across different length ranges.

Smallest
4.5 cm
Lower quarter
5.4 cm
Median
6.7 cm
Upper quarter
7.2 cm
Largest
7.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Penpont

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

Brown / sea trout Atlantic salmon Bullhead European eel Brook lamprey Stone loach

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 →