RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Desborough Island

Largest measured minnow: 5.1 cm

The largest minnow measured in Environment Agency surveys of the River Desborough Island was 5.1 cm, recorded at Desborough Island Downstream Fry on 3 September 2025.

Across 135 measured minnow, the median measured length was 2.7 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 Desborough Island.

See minnow records across England →

Most recent observation3 September 2025Desborough Island Upstream Fry · 12 fish
Largest measured minnow
5.1 cm
Median length
2.7 cm
Fish measured
135
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
5.1 cm3 Sept 2025Desborough Island Downstream Fry178515
4.4 cm20 Aug 2014Desborough Island Upstream Fry142447
4.1 cm3 Sept 2025Desborough Island Upstream Fry178516
4.1 cm26 Aug 2016Desborough Island Downstream Fry149240
4 cm21 Aug 2018Desborough Island Downstream Fry153444
4 cm26 Aug 2016Desborough Island Downstream Fry149240
3.9 cm30 Aug 2023Desborough Island Upstream Fry164290
3.9 cm30 Aug 2023Desborough Island Upstream Fry164290
3.8 cm20 Aug 2024Desborough Island Downstream Fry166651
3.8 cm30 Aug 2023Desborough Island Upstream Fry164290

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
Desborough Island Upstream Fry21 Aug 20083 Sept 20258
Desborough Island Downstream Fry22 Sept 20063 Sept 202511

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

2006–2025

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 135 measured fish were spread across different length ranges.

Smallest
1.1 cm
Lower quarter
2.4 cm
Median
2.7 cm
Upper quarter
3.3 cm
Largest
5.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Desborough Island

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

Roach Perch Dace Chub Bleak Ruffe

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 →