RiverFish

Minnow · Phoxinus phoxinus

Minnow in the River Derwent

Largest measured minnow: 9.1 cm

The largest minnow measured in Environment Agency surveys of the River Derwent was 9.1 cm, recorded at Cromford on 19 July 2016.

Across 671 measured minnow, the median measured length was 3.5 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 Derwent.

See minnow records across England →

Most recent observation29 September 2025Duffield Bridge
Largest measured minnow
9.1 cm
Median length
3.5 cm
Fish measured
671
Survey locations
21

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
9.1 cm19 Jul 2016Cromford148548
9 cm1 Sept 2010Peckwash Mill123984
8.3 cm19 Aug 2014Cromford142855
8.3 cm1 Sept 2013Borrowash140184
8.2 cm2 Sept 2010Cromford123983
8.1 cm6 Sept 2018Cromford153195
8 cm1 Sept 2010Peckwash Mill123984
8 cm1 Sept 2010Peckwash Mill123984
7.9 cm1 Sept 2013Borrowash140184
7.8 cm19 Jul 2016Cromford148548

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
Duffield Bridge4 Sept 201429 Sept 20255
Derby Triangle Net22 Sept 202522 Sept 20251
Nooning Lane Net29 Sept 201019 Sept 20254
Darley Abbey Net17 Sept 202517 Sept 20251
Belper Weir Salmon Parr10 Sept 201810 Sept 20181
Cromford16 Sept 20046 Sept 20189
Nooning Lane19 Apr 200524 Aug 20177
Chub Alley1 Jul 201025 Jul 20174
Borrowash Fish Pass Pool125 Feb 201616 Sept 20162
Raynesway Weir Pool25 Sept 201525 Sept 20151
Borrowash Black Weir25 Sept 201525 Sept 20151
Cromford Salmon Parr4 Sept 20144 Sept 20141
Borrowash14 Oct 20011 Sept 20136
Chub Alley Net29 Sept 20103 Aug 20122
Peckwash Mill1 Sept 20101 Sept 20101
Duffield5 Aug 20014 Oct 20095
Church Wilne28 Apr 19935 Oct 20086
Matlock Bath29 Apr 19933 Sept 20066
Baslow15 Jun 200515 Jun 20051
Draycott19 May 200519 May 20051
Ambergate5 May 19935 May 19931

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

1993–2025

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 671 measured fish were spread across different length ranges.

Smallest
1 cm
Lower quarter
2.8 cm
Median
3.5 cm
Upper quarter
5.5 cm
Largest
9.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Derwent

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

Brown / sea trout Bullhead Grayling Chub Stone loach 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 →