Chub · Leuciscus cephalus

Chub in the River Uck

Largest measured chub: 49 cm

The largest chub measured in Environment Agency surveys of the River Uck was 49 cm, recorded at Isfield Weir on 5 August 2003.

Across 878 measured chub, the median measured length was 19 cm.

Surveyors recorded weights for 467 chub. The median was 1.6 oz (0.046 kg) and the largest recorded weight was 3 lb 14.5 oz (1.77 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 chub records across England →

Most recent observation14 August 2025Uckfield · 46 fish

Largest measured chub: 49 cm
Median length: 19 cm
Fish measured: 878
Survey locations: 10

Individual EA measurements

Largest measured chub

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
49 cm	5 Aug 2003	Isfield Weir	76628
47 cm	14 Aug 2025	Uckfield	177952
43.5 cm	30 Aug 2005	Isfield Weir	87646
43 cm	1 Aug 2024	Uckfield	166436
43 cm	15 Sept 2005	Owlsbury Farm	87656
43 cm	23 Aug 2002	Isfield Weir	63802
42 cm	14 Aug 2025	Uckfield	177952
41.9 cm	5 Aug 2003	Isfield Weir	76628
41 cm	14 Aug 2025	Uckfield	177952
40.3 cm	18 Sept 2006	Owlsbury Farm	102512

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

Explore the river

Where chub were found

Each point marks a survey location with at least one chub 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 chub
Uckfield	20 Aug 2015	14 Aug 2025	8
Buxted Bridge	20 Aug 2003	13 Aug 2025	10
Isfield Weir	23 Aug 2002	7 Aug 2025	8
Upstream Isfield Gate	10 Oct 2019	14 Jul 2023	2
Great Streele	20 Aug 2003	5 Sept 2013	2
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
Ridgewood Bridge	3 Sept 2003	3 Sept 2003	1
Hastingsford Bridge	1 Sept 2003	1 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 chub that year.

102

603

204

205

206

207

008

109

010

311

112

213

114

215

016

217

218

319

020

121

022

223

124

325

Fish measured by surveyors

Measured length distribution

See how the 878 measured fish were spread across different length ranges.

Smallest: 2 cm
Lower quarter: 11.8 cm
Median: 19 cm
Upper quarter: 25 cm
Largest: 49 cm

0–99 mm

167

100–199 mm

316

200–299 mm

283

300–399 mm

101

400–499 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 467 chub. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.4 oz (0.011 kg)
Median: 1.6 oz (0.046 kg)
Upper quarter: 6.1 oz (0.1725 kg)
Heaviest: 3 lb 14.5 oz (1.77 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 Brown / sea trout

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 →