RiverFish

Perch · Perca fluviatilis

Perch in the River Ouse

Largest measured perch: 125.8 cm

The largest perch measured in Environment Agency surveys of the River Ouse was 125.8 cm, recorded at Linton-on-Ouse, below weir (single anode) on 4 August 1997.

Across 1,960 measured perch, the median measured length was 13.8 cm.

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 observation22 June 2026Naburn Weir (single anode) · 6 fish
Largest measured perch
125.8 cm
Median length
13.8 cm
Fish measured
1,960
Survey locations
23

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
125.8 cm4 Aug 1997Linton-on-Ouse, below weir (single anode)110180
48.3 cm28 Jul 2008Naburn Weir (single anode)113010
41.2 cm28 Jun 2013Naburn Weir (single anode)136784
40.3 cm7 Aug 1997Acaster Malbis (single anode)110270
40.2 cm17 Jul 2014Linton-on-Ouse, below weir (single anode)141919
39.6 cm30 Jul 2008Beningbrough Village (single anode)113016
39.3 cm17 Jul 2002Nether Poppleton (single anode)72764
39.2 cm8 Aug 1997Naburn Weir (single anode)110349
38.9 cm23 Jul 1999Naburn Weir (boom boat site)105760
38.9 cm23 Jul 1999Naburn Weir (single anode)105765

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
Naburn Weir (single anode)22 Jul 199622 Jun 202624
Naburn - Fry Survey18 Sept 20067 Aug 20256
Acaster - Fry Survey20 Sept 19847 Aug 202516
Linton-on-Ouse, below weir (single anode)25 Jul 19963 Jul 202523
Beningbrough Village (single anode)24 Jul 19962 Jul 202525
Acaster Malbis (single anode)26 Jul 199626 Jun 202521
Linton-on-Ouse u/s weir (single anode)1 Aug 199725 Jun 201916
Linton weir - u/s - Fry Survey30 Aug 201230 Aug 20121
Beningborough - Fry Survey20 Sept 198420 Sept 200616
Nether Poppleton (single anode)6 Aug 19975 Jul 20059
Linton-on-Ouse u/s weir (gill net)23 Jul 199920 Jul 20044
Beningbrough Village (gill net site)24 Jul 199619 Jul 20047
Acaster Malbis (gill net)20 Jul 199815 Jul 20046
Nether Poppleton (gill net site)21 Jul 199914 Jul 20044
Naburn Weir (gill net)22 Jul 199612 Jul 20048
Linton-on-Ouse u/s weir (boom boat)23 Jul 199614 Jul 20035
Linton-on-Ouse u/s (seine netting site)23 Jul 199614 Jul 20038
Beningbrough Village (boom boat site)24 Jul 199610 Jul 20037
Nether Poppleton (boom boat)18 Jul 19969 Jul 20036
Acaster Malbis (boom boat site)7 Aug 19978 Jul 20036
Naburn Weir (boom boat site)22 Jul 19967 Jul 20037
Beningbrough Village (seine net site)24 Jul 199612 Jul 20027
Naburn Weir (seine net)8 Aug 199727 Jul 19982

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

1984–2026

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 1,960 measured fish were spread across different length ranges.

Smallest
1.5 cm
Lower quarter
10.4 cm
Median
13.8 cm
Upper quarter
18 cm
Largest
125.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ouse

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

Roach Gudgeon Ruffe Bleak Pike Common bream

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 →