Perch · Perca fluviatilis

Perch in the River Ock

Largest measured perch: 33.5 cm

The largest perch measured in Environment Agency surveys of the River Ock was 33.5 cm, recorded at d/s Drayton road bridge - South Channel on 19 April 2005.

Across 40 measured perch, the median measured length was 16.8 cm.

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

See perch records across England →

Most recent observation15 May 2014Millets Farm · 2 fish

Largest measured perch: 33.5 cm
Median length: 16.8 cm
Fish measured: 40
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.

Length	Survey date	Survey location	Survey ID
33.5 cm	19 Apr 2005	d/s Drayton road bridge - South Channel	84460
30.1 cm	19 Apr 2005	d/s Drayton road bridge - South Channel	84460
29.9 cm	19 Apr 2005	d/s Drayton road bridge - South Channel	84460
29.6 cm	4 May 2005	Millets Farm	86323
29.4 cm	4 May 2005	Millets Farm	86323
28.7 cm	19 Apr 2005	d/s Drayton road bridge - South Channel	84460
28 cm	15 May 2014	Millets Farm	140799
26.2 cm	19 Apr 2005	d/s drayton road bridge - North channel	84462
25.4 cm	19 Apr 2005	d/s drayton road bridge - North channel	84462
25 cm	19 Apr 2005	d/s Drayton road bridge - South Channel	84460

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
Millets Farm	4 May 2005	15 May 2014	2
d/s drayton road bridge - North channel	19 Apr 2005	19 Apr 2005	1
d/s Drayton road bridge - South Channel	19 Apr 2005	19 Apr 2005	1

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

2005–2014

Survey records by year

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

305

006

007

008

009

010

011

012

013

114

Fish measured by surveyors

Measured length distribution

See how the 40 measured fish were spread across different length ranges.

Smallest: 6 cm
Lower quarter: 12.1 cm
Median: 16.8 cm
Upper quarter: 24.9 cm
Largest: 33.5 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ock

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

Gudgeon Pike Roach Chub Brown / sea trout 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 →