Dace · Leuciscus leuciscus

Dace in the River Uck

Largest measured dace: 25.7 cm

The largest dace measured in Environment Agency surveys of the River Uck was 25.7 cm, recorded at Uckfield on 11 September 2018.

Across 367 measured dace, the median measured length was 10.5 cm.

Surveyors recorded weights for 243 dace. The median was 0.2 oz (0.007 kg) and the largest recorded weight was 7.7 oz (0.217 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 Uck.

See dace records across England →

Most recent observation14 August 2025Uckfield · 2 fish

Largest measured dace: 25.7 cm
Median length: 10.5 cm
Fish measured: 367
Survey locations: 9

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
25.7 cm	11 Sept 2018	Uckfield	153328
23.4 cm	2 Sept 2003	Owlsbury Farm	76920
23 cm	5 Sept 2007	Owlsbury Farm	107232
22.7 cm	15 Sept 2005	Owlsbury Farm	87656
22.6 cm	21 Sept 2023	Uckfield	163803
22.5 cm	21 Sept 2023	Uckfield	163803
22.5 cm	11 Sept 2018	Uckfield	153328
22.5 cm	15 Sept 2005	Owlsbury Farm	87656
22.4 cm	21 Sept 2017	Uckfield	151699
21.9 cm	2 Sept 2003	Owlsbury Farm	76920

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
Uckfield	20 Aug 2015	14 Aug 2025	7
Buxted Bridge	20 Aug 2003	13 Aug 2025	9
Isfield Weir	23 Aug 2002	7 Aug 2025	8
Upstream Isfield Gate	14 Jul 2023	14 Jul 2023	1
Great Streele	5 Sept 2013	5 Sept 2013	1
Buxted Weir	8 Sept 2011	8 Sept 2011	1
Bradfords Bridge	12 Aug 2011	12 Aug 2011	1
Owlsbury Farm	2 Sept 2003	5 Sept 2007	5
Little Horsted	17 Sept 2003	17 Sept 2003	1

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

2002–2025

Survey records by year

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

102

403

204

205

206

207

008

109

010

311

112

213

114

215

016

117

118

219

020

121

022

323

024

325

Fish measured by surveyors

Measured length distribution

See how the 367 measured fish were spread across different length ranges.

Smallest: 2.3 cm
Lower quarter: 6.3 cm
Median: 10.5 cm
Upper quarter: 16.3 cm
Largest: 25.7 cm

0–99 mm

173

100–199 mm

167

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 243 dace. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.1 oz (0.002 kg)
Median: 0.2 oz (0.007 kg)
Upper quarter: 0.8 oz (0.024 kg)
Heaviest: 7.7 oz (0.217 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 Uck

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

Stone loach Minnow Roach Bullhead Gudgeon Chub

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 →