RiverFish

Dace · Leuciscus leuciscus

Dace in the River Brett (Main Reaches)

Largest measured dace: 27.7 cm

The largest dace measured in Environment Agency surveys of the River Brett (Main Reaches) was 27.7 cm, recorded at Chelsworth on 11 March 1988.

Across 2,204 measured dace, the median measured length was 10.9 cm.

Surveyors recorded weights for 7 dace. The median was 0.9 oz (0.026 kg) and the largest recorded weight was 7.4 oz (0.211 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 Brett (Main Reaches).

See dace records across England →

Most recent observation9 April 2026Waterhouse Farm · 4 fish
Largest measured dace
27.7 cm
Median length
10.9 cm
Fish measured
2,204
Survey locations
14

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
27.7 cm11 Mar 1988Chelsworth13735
27.7 cm11 Mar 1988Chelsworth13735
27.6 cm25 Feb 1988Peyton Hall13731
26.9 cm16 Apr 2018Cobbolds Mill152538
26.9 cm16 Apr 2018Cobbolds Mill152538
26.9 cm25 Feb 1988Peyton Hall13731
26.8 cm25 Apr 2018Waterhouse Farm152643
26.7 cm25 Sept 2013Peyton Hall140035
26.3 cm29 Mar 1988Waterhouse Farm13728
26 cm16 Apr 2018Cobbolds Mill152538

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
Waterhouse Farm18 Mar 19829 Apr 202613
Higham FGS1 Apr 19827 Apr 202614
Hadleigh Town6 Feb 198526 Apr 20249
Chelsworth11 Mar 198826 Apr 20187
Cobbolds Mill22 Feb 198816 Apr 20187
Cosford Bridge19 Dec 198413 Apr 20188
Semer A14 Dec 198425 Sept 20138
Peyton Hall19 Feb 198225 Sept 20139
Cherry Hill26 Feb 198820 Apr 20066
Hadleigh STW16 Mar 19826 Apr 20066
Downstream Mill Farm25 Mar 19825 Apr 20065
Upstream Mill Farm24 Mar 198229 Mar 20064
Semer B (Dairy Farm - River Brett)17 Feb 198213 Dec 19842
Bridge Farm Chelsworth12 Feb 198212 Feb 19821

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

1982–2026

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 2,204 measured fish were spread across different length ranges.

Smallest
3.6 cm
Lower quarter
8.8 cm
Median
10.9 cm
Upper quarter
15.1 cm
Largest
27.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 7 dace. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.7 oz (0.019 kg)
Lower quarter
0.8 oz (0.022 kg)
Median
0.9 oz (0.026 kg)
Upper quarter
4 oz (0.114 kg)
Heaviest
7.4 oz (0.211 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 Brett (Main Reaches)

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

European eel Pike Roach Gudgeon Perch Bullhead

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 →