RiverFish

Perch · Perca fluviatilis

Perch in the River Ouse

Largest measured perch: 34.3 cm

The largest perch measured in Environment Agency surveys of the River Ouse was 34.3 cm, recorded at Isfield Church on 27 September 2023.

Across 1,097 measured perch, the median measured length was 11.5 cm.

Surveyors recorded weights for 827 perch. The median was 0.6 oz (0.018 kg) and the largest recorded weight was 1 lb 4.1 oz (0.569 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 Ouse.

See perch records across England →

Most recent observation14 August 2024Newick · 1 fish
Largest measured perch
34.3 cm
Median length
11.5 cm
Fish measured
1,097
Survey locations
18

Individual EA measurements

Largest measured perch

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
34.3 cm27 Sept 2023Isfield Church163804
32.5 cm13 Sept 2006Sheffield Bridge102501
30.8 cm24 Jul 2024East Mascalls Bridge165932
30.5 cm31 Aug 2005Sharpsbridge87620
30.2 cm23 Aug 2007Sharpsbridge107011
30 cm12 Sept 2023East Mascalls Bridge163704
29 cm23 Aug 2006Sharpsbridge102380
28 cm23 Aug 2006Sharpsbridge102380
27 cm17 Sept 2007Newick106684
26.7 cm31 Aug 2005Sharpsbridge87620

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 surveyedFirst recordedLast recordedVisits finding perch
Newick9 Oct 200314 Aug 202410
Sheffield Bridge20 Aug 200225 Jul 202414
Fletching Mill Upstream20 Sept 200925 Jul 20246
Sloop13 Aug 200124 Jul 202415
East Mascalls Bridge10 Aug 200124 Jul 202416
Isfield Church2 Oct 200327 Sept 20238
Upper Ryelands15 Aug 20011 Oct 20137
Upstream Lindfield Bridge24 Oct 201224 Oct 20121
Sutton Hall Weir Downstream26 Oct 201126 Oct 20111
Sloop Weir Upstream25 Oct 201125 Oct 20111
Sloop Weir Downstream25 Oct 201125 Oct 20111
Anchor Weir7 Sept 20117 Sept 20111
Fletching Mill Downstream28 Oct 200911 Jul 20113
Sharpsbridge8 Aug 200229 Oct 20097
Barcombe Mills25 Sept 200324 Sept 20072
Avins Bridge9 Aug 20017 Sept 20077
Ardingly College6 Jul 199823 Sept 20032
Cherry lane11 Aug 200311 Aug 20031

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

1998–2024

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 1,097 measured fish were spread across different length ranges.

Smallest
2.3 cm
Lower quarter
6.7 cm
Median
11.5 cm
Upper quarter
15.5 cm
Largest
34.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 827 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.1 oz (0.004 kg)
Median
0.6 oz (0.018 kg)
Upper quarter
1.7 oz (0.047 kg)
Heaviest
1 lb 4.1 oz (0.569 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 Ouse

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

European eel Roach Dace Gudgeon Stone loach 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 →