RiverFish

Perch · Perca fluviatilis

Perch in the Bristol Avon main river

Largest measured perch: 37.5 cm

The largest perch measured in Environment Agency surveys of the Bristol Avon main river was 37.5 cm, recorded at Rawlings Farm (Te) on 13 July 2005.

Across 747 measured perch, the median measured length was 16.5 cm.

Surveyors recorded weights for 216 perch. The median was 3.7 oz (0.1035 kg) and the largest recorded weight was 2 lb 2.5 oz (0.977 kg).

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

See perch records across England →

Most recent observation3 September 2024Chippenham (Te) · 6 fish
Largest measured perch
37.5 cm
Median length
16.5 cm
Fish measured
747
Survey locations
10

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
37.5 cm13 Jul 2005Rawlings Farm (Te)85030
36.7 cm30 Aug 2011Great Somerford (Te)127594
36.5 cm27 May 1999Cow Bridge22204
36 cm30 Aug 2011Great Somerford (Te)127594
36 cm4 Sept 2006Chippenham (Te)101177
36 cm8 Sept 2005Great Somerford (Te)86002
35.8 cm15 Sept 2005Chippenham (Te)86151
35.5 cm2 Sept 2009Christian Malford (Te)118784
34.1 cm2 Aug 2006Christian Malford (Te)101184
34 cm28 Jul 2004Chippenham (Te)80665

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
Chippenham (Te)9 Sept 20033 Sept 202415
Christian Malford (Te)19 May 199923 Aug 202312
Great Somerford (Te)28 Aug 200222 Aug 20239
Melksham16 Sept 201530 Aug 20173
Lacock (Te)7 Jul 200523 Aug 20179
Barton Country Park18 Sept 201418 Sept 20141
Rawlings Farm (Te)23 Jul 200312 Jul 20064
Cow Bridge27 May 199927 May 19991
u/s Kingsmead Mill26 May 199926 May 19991
d/s Malmesbury bypass20 May 199920 May 19991

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

1999–2024

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 747 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
12.8 cm
Median
16.5 cm
Upper quarter
20.9 cm
Largest
37.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 216 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.1 oz (0.004 kg)
Lower quarter
1.9 oz (0.0528 kg)
Median
3.7 oz (0.1035 kg)
Upper quarter
7.7 oz (0.2182 kg)
Heaviest
2 lb 2.5 oz (0.977 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Bristol Avon main river

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

Roach Minnow Chub Dace Pike 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 →