RiverFish

Perch · Perca fluviatilis

Perch in the River Penton Hook - Chertsey

Largest measured perch: 42.6 cm

The largest perch measured in Environment Agency surveys of the River Penton Hook - Chertsey was 42.6 cm, recorded at Penton Hook Loop Upstream of Laleham Intake on 10 September 2007.

Across 902 measured perch, the median measured length was 15.1 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 Penton Hook - Chertsey.

See perch records across England →

Most recent observation30 July 2025Penton Hook to Chertsey (Laleham Main) · 4 fish
Largest measured perch
42.6 cm
Median length
15.1 cm
Fish measured
902
Survey locations
3

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
42.6 cm10 Sept 2007Penton Hook Loop Upstream of Laleham Intake106747
42 cm14 Sept 2019Penton Hook to Chertsey (Laleham Main)155738
41.2 cm14 Sept 2019Penton Hook to Chertsey (Laleham Main)155738
40.8 cm6 Sept 2013Penton Hook, Weir Stream and Pool138870
39.7 cm7 Sept 2012Penton Hook, Weir Stream and Pool133524
39.5 cm13 Sept 2010Penton Hook, Weir Stream and Pool123971
39.2 cm14 Sept 2019Penton Hook to Chertsey (Laleham Main)155738
38.8 cm14 Sept 2019Penton Hook to Chertsey (Laleham Main)155738
38.6 cm14 Sept 2009Penton Hook, Weir Stream and Pool119022
38.6 cm10 Sept 2007Penton Hook, Weir Stream and Pool107073

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
Penton Hook to Chertsey (Laleham Main)1 Sept 199530 Jul 202524
Penton Hook, Weir Stream and Pool1 Sept 199521 Jul 202420
Penton Hook Loop Upstream of Laleham Intake8 Sept 200510 Sept 20073

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

1995–2025

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 902 measured fish were spread across different length ranges.

Smallest
4.9 cm
Lower quarter
11.3 cm
Median
15.1 cm
Upper quarter
19.7 cm
Largest
42.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Penton Hook - Chertsey

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

Roach Chub European eel Gudgeon Bleak Dace

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 →