Perch · Perca fluviatilis

Perch in the River Uck

Largest measured perch: 33.5 cm

The largest perch measured in Environment Agency surveys of the River Uck was 33.5 cm, recorded at Owlsbury Farm on 15 September 2005.

Across 211 measured perch, the median measured length was 12.2 cm.

Surveyors recorded weights for 167 perch. The median was 1 oz (0.027 kg) and the largest recorded weight was 1 lb 8.8 oz (0.703 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 perch records across England →

Most recent observation14 August 2025Uckfield · 6 fish

Largest measured perch: 33.5 cm
Median length: 12.2 cm
Fish measured: 211
Survey locations: 8

Individual EA measurements

Largest measured perch

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
33.5 cm	15 Sept 2005	Owlsbury Farm	87656
33.1 cm	5 Aug 2003	Isfield Weir	76628
28.5 cm	18 Sept 2006	Owlsbury Farm	102512
28.4 cm	21 Sept 2023	Uckfield	163803
27.4 cm	18 Sept 2006	Owlsbury Farm	102512
26.3 cm	13 Aug 2025	Buxted Bridge	177956
26.2 cm	1 Aug 2024	Uckfield	166436
25.1 cm	6 Aug 2007	Isfield Weir	106991
25.1 cm	23 Aug 2002	Isfield Weir	63802
24.5 cm	4 Sept 2006	Isfield Weir	102522

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

Explore the river

Where perch were found

Each point marks a survey location with at least one perch 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 perch
Uckfield	21 Sept 2023	14 Aug 2025	3
Buxted Bridge	20 Aug 2003	13 Aug 2025	6
Isfield Weir	23 Aug 2002	7 Aug 2025	8
Upstream Isfield Gate	10 Oct 2019	10 Oct 2019	1
Tickerage Castle	21 Aug 2012	21 Aug 2012	1
Buxted Weir	8 Sept 2011	8 Sept 2011	1
Owlsbury Farm	2 Sept 2003	18 Sept 2006	4
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 perch that year.

102

403

204

205

206

107

008

109

010

211

212

013

114

015

016

117

018

119

020

021

022

123

124

325

Fish measured by surveyors

Measured length distribution

See how the 211 measured fish were spread across different length ranges.

Smallest: 4.2 cm
Lower quarter: 9.2 cm
Median: 12.2 cm
Upper quarter: 15.1 cm
Largest: 33.5 cm

0–99 mm

100–199 mm

132

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 167 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.5 oz (0.0135 kg)
Median: 1 oz (0.027 kg)
Upper quarter: 1.8 oz (0.052 kg)
Heaviest: 1 lb 8.8 oz (0.703 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 →