Dace · Leuciscus leuciscus

Dace in the River Brock

Largest measured dace: 26.8 cm

The largest dace measured in Environment Agency surveys of the River Brock was 26.8 cm, recorded at Myerscough College on 20 July 2006.

Across 234 measured dace, the median measured length was 17.1 cm.

Surveyors recorded weights for 3 dace. The median was 1.8 oz (0.05 kg) and the largest recorded weight was 1.8 oz (0.05 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 Brock.

See dace records across England →

Most recent observation22 September 2025Myerscough College · 1 fish

Largest measured dace: 26.8 cm
Median length: 17.1 cm
Fish measured: 234
Survey locations: 2

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
26.8 cm	20 Jul 2006	Myerscough College	100520
26.8 cm	20 Jul 2006	Myerscough College	100520
21.7 cm	3 Oct 2005	Nearer Light Ash	87760
21.7 cm	18 Oct 2004	Myerscough College	82897
21.6 cm	18 Oct 2004	Myerscough College	82897
21 cm	5 Aug 2005	Myerscough College	88464
20.9 cm	14 Jul 2011	Myerscough College	126982
20.8 cm	25 Aug 2009	Myerscough College	118530
20.7 cm	20 Jul 2006	Myerscough College	100520
20.7 cm	20 Jul 2006	Myerscough College	100520

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
Myerscough College	1 Oct 2002	22 Sept 2025	14
Nearer Light Ash	24 Aug 1999	13 Sept 2006	3

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

1999–2025

Survey records by year

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

199

000

001

102

103

104

205

206

107

008

109

110

111

012

013

114

015

116

017

018

119

020

021

122

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 234 measured fish were spread across different length ranges.

Smallest: 5.6 cm
Lower quarter: 14.4 cm
Median: 17.1 cm
Upper quarter: 18.6 cm
Largest: 26.8 cm

0–99 mm

100–199 mm

199

200–299 mm

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: 0.4 oz (0.012 kg)
Lower quarter: 1.1 oz (0.031 kg)
Median: 1.8 oz (0.05 kg)
Upper quarter: 1.8 oz (0.05 kg)
Heaviest: 1.8 oz (0.05 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 Brock

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

Brown / sea trout European eel Atlantic salmon Brook lamprey Chub Flounder

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 →