RiverFish

Perch · Perca fluviatilis

Perch in the River Gwash

Largest measured perch: 27.2 cm

The largest perch measured in Environment Agency surveys of the River Gwash was 27.2 cm, recorded at Foundry Road on 20 July 2017.

Across 23 measured perch, the median measured length was 18.6 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 Gwash.

See perch records across England →

Most recent observation20 July 2017Foundry Road · 2 fish
Largest measured perch
27.2 cm
Median length
18.6 cm
Fish measured
23
Survey locations
8

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
27.2 cm20 Jul 2017Foundry Road151344
26 cm20 Mar 1996Downstream Ingthorpe Road Bridge54526
23.5 cm22 Mar 1996Belmesthorpe Meadow54531
23 cm22 Mar 1996Belmesthorpe Meadow54531
23 cm22 Mar 1996Belmesthorpe Meadow54531
23 cm20 Mar 1996Downstream Ingthorpe Road Bridge54526
23 cm20 Mar 1996Downstream Ingthorpe Road Bridge54526
22.6 cm20 Jul 2017Foundry Road151344
22 cm20 Mar 1996Downstream Ingthorpe Road Bridge54526
19 cm22 Mar 1996Belmesthorpe Meadow54531

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
Foundry Road20 Jul 201720 Jul 20171
Church bridge - u/s Empingham20 Mar 19964 Oct 20162
Great Casterton18 Jun 201518 Jun 20151
Upstream Ryhall STW - Flow project Site14 May 201514 May 20151
Downstream Ryhall STW Flow project site14 May 201514 May 20151
Belmesthorpe Meadow22 Mar 19964 Jun 20142
Friths Farm27 Mar 199627 Mar 19961
Downstream Ingthorpe Road Bridge20 Mar 199620 Mar 19961

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

1996–2017

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 23 measured fish were spread across different length ranges.

Smallest
8 cm
Lower quarter
15.2 cm
Median
18.6 cm
Upper quarter
23 cm
Largest
27.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Gwash

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

Brown / sea trout European eel Bullhead Grayling Dace 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 →