RiverFish

Perch · Perca fluviatilis

Perch in the Main river sites

Largest measured perch: 41.5 cm

The largest perch measured in Environment Agency surveys of the Main river sites was 41.5 cm, recorded at S3R Corfe Mullen to Cowgrove on 20 May 2008.

Across 287 measured perch, the median measured length was 19.8 cm.

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

See perch records across England →

Most recent observation18 September 2025Canford School (top site S2S) · 1 fish
Largest measured perch
41.5 cm
Median length
19.8 cm
Fish measured
287
Survey locations
29

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
41.5 cm20 May 2008S3R Corfe Mullen to Cowgrove111010
39.2 cm24 Aug 2010The Ship Inn123558
39.1 cm4 Jun 2009S3R Corfe Mullen to Cowgrove117536
38.7 cm5 May 2010S1R Fiddleford to Child Okeford121493
38.7 cm5 May 2010S1R Fiddleford to Child Okeford121493
38.5 cm4 Jun 2009S3R Corfe Mullen to Cowgrove117536
38.5 cm24 May 2005S3R Corfe Mullen to Cowgrove84587
38.4 cm24 Aug 2010The Ship Inn123558
38.4 cm17 Jul 2008S2R Stourpaine to Bryanston111915
38.4 cm22 Jun 2004S3R Corfe Mullen to Cowgrove80192

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
Kinson17 Sept 201918 Sept 20253
Canford School (top site S2S)18 Sept 202518 Sept 20251
Muscliffe- Kingfisher Barn Visitor Centre17 Sept 201919 Sept 20232
Upstream Haywards Bridge20 Sept 202218 Sept 20232
Durweston Downstream of footbridge16 Sept 202118 Sept 20232
S1 Gillingham1 Jul 20048 Jun 20237
Throop d/s Glens Weir21 Sept 202221 Sept 20221
Longham Bridge12 Sept 200721 Sept 20223
Blandford - Stour Meadow13 Jun 201831 Jul 20192
S7 Durweston8 Jun 201130 May 20196
S3R Corfe Mullen to Cowgrove22 Jun 200427 Jun 20186
S2R Stourpaine to Bryanston13 Jul 200431 May 20187
S1R Fiddleford to Child Okeford20 Jul 200417 May 20189
S6 Child okeford8 Jun 20119 Jun 20152
Muscliffe13 Sept 200710 Sept 20122
S8 Blandford4 Sept 20124 Sept 20121
Canford School Reach31 May 201231 May 20121
Canford Mill Stream31 May 201231 May 20121
S9 Spetisbury30 May 201230 May 20121
The Ship Inn15 Jul 200424 Aug 20104
Blandford channel9 Aug 20109 Aug 20101
Throop u/s Glens Weir11 Sept 200911 Sept 20091
Throop d/s gauging Weir11 Sept 200911 Sept 20091
S3 Riversdale Farm2 Jun 20053 Jul 20083
S4R Dudsbury to Merritown17 Jun 200422 May 20084
S5R Iford Bridge to Hengistbury Head13 May 200412 May 20084
A347 Road Bridge11 Oct 200511 Oct 20051
S4 St Mary's Marnhull6 Jul 200423 Jun 20052
Hanford9 Jun 20059 Jun 20051

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

2004–2025

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 287 measured fish were spread across different length ranges.

Smallest
5.7 cm
Lower quarter
16.3 cm
Median
19.8 cm
Upper quarter
26.2 cm
Largest
41.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main river sites

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

Minnow Bullhead European eel Dace 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 →