RiverFish

Perch · Perca fluviatilis

Perch in the River Duston Branch

Largest measured perch: 35 cm

The largest perch measured in Environment Agency surveys of the River Duston Branch was 35 cm, recorded at Nether Heyford on 17 September 1998.

Across 185 measured perch, the median measured length was 12.3 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 Duston Branch.

See perch records across England →

Most recent observation20 November 2018Dodford · 10 fish
Largest measured perch
35 cm
Median length
12.3 cm
Fish measured
185
Survey locations
9

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
35 cm17 Sept 1998Nether Heyford54137
33.5 cm16 Sept 1992Nether Heyford54117
33 cm7 Oct 1998Kislingbury54139
32.5 cm7 Oct 1998Kislingbury54139
32.5 cm16 Sept 1992Nether Heyford54117
32 cm16 Sept 1992Nether Heyford54117
31 cm17 Sept 1998Nether Heyford54137
30 cm3 Nov 1995Kislingbury54128
29.5 cm17 Sept 1998Nether Heyford54137
29.5 cm3 Nov 1995Kislingbury54128

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
Dodford30 Aug 198920 Nov 20183
Long Buckby STW Downstream24 Sept 201324 Sept 20131
Duston Mill19 Oct 201119 Oct 20111
St James Mill Weir Upstream10 Aug 200910 Aug 20091
St James Mill Weir Downstream10 Aug 200910 Aug 20091
Brockhall16 Nov 199525 Jul 20013
Kislingbury10 Sept 19927 Oct 19983
Nether Heyford16 Sept 199217 Sept 19983
Upton Mill6 Sept 19897 Nov 19953

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

1989–2018

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 185 measured fish were spread across different length ranges.

Smallest
5.8 cm
Lower quarter
10.5 cm
Median
12.3 cm
Upper quarter
18.5 cm
Largest
35 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Duston Branch

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

Bullhead Brown / sea trout Pike Roach Minnow 3-spined stickleback

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 →