RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Main Yealm

Largest measured minnow: 8.8 cm

The largest minnow measured in Environment Agency surveys of the River Main Yealm was 8.8 cm, recorded at Putta Pool on 29 August 2017.

Across 235 measured minnow, the median measured length was 5.4 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 Yealm.

See minnow records across England →

Most recent observation28 August 2025Treby Ham · 11 fish
Largest measured minnow
8.8 cm
Median length
5.4 cm
Fish measured
235
Survey locations
9

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
8.8 cm29 Aug 2017Putta Pool151890
8.7 cm16 Aug 2017Treby Ham151241
8.7 cm16 Aug 2017Treby Ham151241
8.5 cm18 Aug 2023Treby Ham163133
8.5 cm16 Aug 2017Treby Ham151241
8.4 cm23 Jun 2009Treby Ham117560
8.3 cm16 Aug 2017Treby Ham151241
8 cm29 Aug 2017Putta Pool151890
7.9 cm18 Aug 2023Treby Ham163133
7.8 cm16 Aug 2017Treby Ham151241

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
Treby Ham7 Aug 200228 Aug 202516
Putta Pool3 Aug 200215 Aug 202513
Puslinch Bridge5 Aug 200214 Aug 202412
Potsons Wood6 Aug 20025 Aug 202411
Downstream Puslinch Br31 Aug 202331 Aug 20231
Upstream Lee Mill STW Pumping Station17 Sept 201417 Sept 20141
Upstream Hitchcombe Tributary17 Sept 201417 Sept 20141
200m u/s Long Brook confluence6 Aug 20126 Aug 20121
d/s Blachford Lake21 Sept 200521 Sept 20051

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

2002–2025

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 235 measured fish were spread across different length ranges.

Smallest
1.5 cm
Lower quarter
3.6 cm
Median
5.4 cm
Upper quarter
6.4 cm
Largest
8.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Yealm

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

Brown / sea trout Atlantic salmon European eel Bullhead Brook lamprey 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 →