Perch · Perca fluviatilis

Perch in the River Isle

Largest measured perch: 20 cm

The largest perch measured in Environment Agency surveys of the River Isle was 20 cm, recorded at Midelney on 13 August 2009.

Across 21 measured perch, the median measured length was 12.7 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 Isle.

See perch records across England →

Most recent observation13 August 2009Midelney · 5 fish

Largest measured perch: 20 cm
Median length: 12.7 cm
Fish measured: 21
Survey locations: 1

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
20 cm	13 Aug 2009	Midelney	118482
17.3 cm	13 Aug 2009	Midelney	118482
16.5 cm	11 Aug 2009	Midelney	118366
16 cm	13 Aug 2008	Midelney	116663
15.8 cm	11 Aug 2009	Midelney	118366
15.4 cm	11 Aug 2009	Midelney	118366
15.3 cm	11 Aug 2009	Midelney	118366
15.2 cm	12 Aug 2009	Midelney	118367
14.5 cm	13 Aug 2009	Midelney	118482
13.2 cm	11 Aug 2009	Midelney	118366

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
Midelney	13 Aug 2008	13 Aug 2009	5

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

2008–2009

Survey records by year

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

208

309

Fish measured by surveyors

Measured length distribution

See how the 21 measured fish were spread across different length ranges.

Smallest: 6.7 cm
Lower quarter: 7.5 cm
Median: 12.7 cm
Upper quarter: 15.4 cm
Largest: 20 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Isle

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

Roach

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 →