RiverFish

Dace · Leuciscus leuciscus

Dace in the River Wensum (upper)

Largest measured dace: 27.8 cm

The largest dace measured in Environment Agency surveys of the River Wensum (upper) was 27.8 cm, recorded at Upstream Fakenham Mill on 1 May 1990.

Across 1,338 measured dace, the median measured length was 18.3 cm.

Surveyors recorded weights for 3 dace. The median was 4.5 oz (0.128 kg) and the largest recorded weight was 4.7 oz (0.133 kg).

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Wensum (upper).

See dace records across England →

Most recent observation2 September 2025Upstream Fakenham Mill · 16 fish
Largest measured dace
27.8 cm
Median length
18.3 cm
Fish measured
1,338
Survey locations
7

Individual EA measurements

Largest measured dace

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
27.8 cm1 May 1990Upstream Fakenham Mill17192
26.5 cm18 May 2023Upstream Fakenham Mill162643
26 cm3 Sept 2024Upstream Fakenham Mill167171
25.8 cm1 May 1990Upstream Fakenham Mill17192
25.8 cm20 Mar 1986Fakenham Common17184
25.7 cm27 Apr 2015Fakenham Common145066
25.5 cm20 Mar 1986Fakenham Common17184
25.3 cm12 Sept 2012Upstream Fakenham Mill133558
25.1 cm23 Oct 2009Upstream Fakenham Mill119788
25.1 cm6 Mar 1986Hellhoughton Common17176

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where dace were found

Each point marks a survey location with at least one dace 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 dace
Upstream Fakenham Mill1 May 19902 Sept 202516
Hellhoughton Common6 Mar 19865 Apr 20195
Fakenham Common20 Mar 198614 Jun 201810
Upstream Sculthorpe Mill30 Apr 19908 Jun 20184
South Mill Farm26 Apr 19908 Apr 20153
Tatterford Common25 Mar 199721 May 20032
Upstream Broomsthorpe Bridge27 Feb 198624 Mar 19973

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

1986–2025

Survey records by year

Each bar shows how many survey visits recorded dace that year.

Fish measured by surveyors

Measured length distribution

See how the 1,338 measured fish were spread across different length ranges.

Smallest
2.8 cm
Lower quarter
16 cm
Median
18.3 cm
Upper quarter
20.5 cm
Largest
27.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 3 dace. This is a subset of the measured fish and may not represent the whole population.

Lightest
4 oz (0.113 kg)
Lower quarter
4.3 oz (0.1205 kg)
Median
4.5 oz (0.128 kg)
Upper quarter
4.6 oz (0.1305 kg)
Heaviest
4.7 oz (0.133 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Wensum (upper)

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

Brown / sea trout Stone loach Bullhead European eel 3-spined stickleback Brook lamprey

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 →