RiverFish

Perch · Perca fluviatilis

Perch in the Old River Lea

Largest measured perch: 43.8 cm

The largest perch measured in Environment Agency surveys of the Old River Lea was 43.8 cm, recorded at Cornmill Meadows 3 (Mile Nursery) on 10 May 2018.

Across 385 measured perch, the median measured length was 11.4 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Old River Lea.

See perch records across England →

Most recent observation21 May 2026Cornmill Meadows 3 (Mile Nursery) · 35 fish
Largest measured perch
43.8 cm
Median length
11.4 cm
Fish measured
385
Survey locations
2

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
43.8 cm10 May 2018Cornmill Meadows 3 (Mile Nursery)152519
38.1 cm9 Apr 2013Cornmill Meadows 3 (Mile Nursery)135811
32.5 cm1 May 2007Cornmill Meadows 3 (Mile Nursery)105396
23.7 cm9 Apr 2013Cornmill Meadows 3 (Mile Nursery)135811
19.7 cm16 May 2016Cornmill Meadows 3 (Mile Nursery)148046
19.3 cm1 May 2007Cornmill Meadows 3 (Mile Nursery)105396
18.8 cm16 May 2016Cornmill Meadows 3 (Mile Nursery)148046
17.8 cm13 May 2015Cornmill Meadows 3 (Mile Nursery)144661
17.8 cm1 May 2007Cornmill Meadows 3 (Mile Nursery)105396
17.5 cm6 May 2009Cornmill Meadows 3 (Mile Nursery)117205

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
Cornmill Meadows 3 (Mile Nursery)17 Dec 200421 May 202615
Cornmill Meadows restoration10 Apr 201410 Apr 20141

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

2004–2026

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 385 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
8.5 cm
Median
11.4 cm
Upper quarter
13.5 cm
Largest
43.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Old River Lea

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

Roach Chub Pike Tench Minnow European eel

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 →