RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Marlow

Largest measured minnow: 6.6 cm

The largest minnow measured in Environment Agency surveys of the River Marlow was 6.6 cm, recorded at Marlow Downstream Fry on 4 September 2025.

Across 1,840 measured minnow, the median measured length was 2.5 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 Marlow.

See minnow records across England →

Most recent observation4 September 2025Marlow Upstream Fry · 175 fish
Largest measured minnow
6.6 cm
Median length
2.5 cm
Fish measured
1,840
Survey locations
2

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
6.6 cm4 Sept 2025Marlow Downstream Fry178522
6.5 cm4 Sept 2025Marlow Downstream Fry178522
6.4 cm4 Sept 2025Marlow Downstream Fry178522
6.4 cm4 Sept 2025Marlow Downstream Fry178522
6.2 cm4 Sept 2025Marlow Downstream Fry178522
6.2 cm4 Sept 2025Marlow Downstream Fry178522
6 cm21 Aug 2014Marlow Downstream Fry142454
5.9 cm18 Aug 2009Marlow Downstream Fry120416
5.8 cm4 Sept 2025Marlow Downstream Fry178522
5.8 cm4 Sept 2025Marlow Downstream Fry178522

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
Marlow Upstream Fry26 Aug 20034 Sept 202519
Marlow Downstream Fry26 Aug 20034 Sept 202516

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

2003–2025

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 1,840 measured fish were spread across different length ranges.

Smallest
0.7 cm
Lower quarter
2.1 cm
Median
2.5 cm
Upper quarter
3 cm
Largest
6.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Marlow

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

Gudgeon Chub Roach Bleak Dace 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 →