Dace · Leuciscus leuciscus

Dace in the River Box (Main Reaches)

Largest measured dace: 28.1 cm

The largest dace measured in Environment Agency surveys of the River Box (Main Reaches) was 28.1 cm, recorded at Scotland Street on 15 April 1988.

Across 9,167 measured dace, the median measured length was 13.8 cm.

Surveyors recorded weights for 151 dace. The median was 1.2 oz (0.034 kg) and the largest recorded weight was 5.6 oz (0.16 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 Box (Main Reaches).

See dace records across England →

Most recent observation22 May 2026Stour Confluence · 58 fish

Largest measured dace: 28.1 cm
Median length: 13.8 cm
Fish measured: 9,167
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.

Length	Survey date	Survey location	Survey ID
28.1 cm	15 Apr 1988	Scotland Street	13781
27.1 cm	19 May 2006	Polstead Ford	90772
26 cm	13 Apr 1988	Polstead Mill	13782
26 cm	11 Apr 1988	Stour Confluence	13779
25.5 cm	28 Mar 1985	Polstead Ford	13777
25 cm	4 May 1994	Polstead Ford	13796
24.9 cm	26 Mar 1985	Scotland Street	13775
24.5 cm	15 Apr 1988	Scotland Street	13781
24.1 cm	13 May 1997	Polstead Ford	13803
24.1 cm	15 Apr 1988	Scotland Street	13781

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 surveyed	First recorded	Last recorded	Visits finding dace
Stour Confluence	16 Sept 1981	22 May 2026	18
Scotland Street	26 Mar 1985	21 May 2026	16
Polstead Mill	27 Mar 1985	11 Jun 2024	11
Thorington Mill	25 Mar 1985	8 May 2024	11
Polstead Ford	28 Mar 1985	7 May 2024	11
Stone Street	18 Apr 1991	3 May 2018	4
Peyton Hall Farm	25 Apr 1991	9 May 2012	3

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

1981–2026

Survey records by year

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

181

082

083

084

585

086

087

588

089

090

791

092

093

594

095

096

697

098

099

600

001

002

003

004

005

606

007

008

009

210

011

612

013

214

515

216

017

618

019

020

121

222

023

524

025

226

Fish measured by surveyors

Measured length distribution

See how the 9,167 measured fish were spread across different length ranges.

Smallest: 3.3 cm
Lower quarter: 11.3 cm
Median: 13.8 cm
Upper quarter: 16.1 cm
Largest: 28.1 cm

0–99 mm

1200

100–199 mm

7456

200–299 mm

511

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 151 dace. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.002 kg)
Lower quarter: 0.4 oz (0.011 kg)
Median: 1.2 oz (0.034 kg)
Upper quarter: 3.4 oz (0.097 kg)
Heaviest: 5.6 oz (0.16 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 Box (Main Reaches)

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

European eel Brown / sea trout Stone loach Roach Chub 3-spined stickleback

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 →