RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Ruthern

Largest measured brown / sea trout: 35.8 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Ruthern was 35.8 cm, recorded at Withiel on 3 August 2000.

Across 1,250 measured brown / sea trout, the median measured length was 12.2 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 Ruthern.

See brown / sea trout records across England →

Most recent observation1 July 2026Ruthern Bridge · 58 fish
Largest measured brown / sea trout
35.8 cm
Median length
12.2 cm
Fish measured
1,250
Survey locations
8

Individual EA measurements

Largest measured brown / sea trout

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
35.8 cm3 Aug 2000Withiel103544
33.8 cm5 Sept 1997Cottonwood103660
33 cm16 Jun 1994Cottonwood103740
28.9 cm22 Aug 2003Ruthern Bridge77246
28.5 cm22 Aug 2003Ruthern Bridge77246
28.2 cm3 Sept 2004Ruthern Bridge82257
27.6 cm2 Jul 2024Ruthern Bridge165490
27 cm12 Jul 2022Ruthern Bridge161640
26.7 cm5 Sept 1997Cottonwood103660
25.9 cm22 Jul 2009Ruthern Bridge118315

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where brown / sea trout were found

Each point marks a survey location with at least one brown / sea trout 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 brown / sea trout
Ruthern Bridge20 Jun 19891 Jul 202626
Upstream Withiel7 Jun 202310 Jul 20242
Upstream Treliver18 Jul 202310 Jul 20242
Ruthernbridge Dip28 Jun 20232 Jul 20242
Trewithian16 Jul 19804 Jul 202311
Withiel16 Jul 19807 Jun 202312
Cottonwood23 Jul 198021 Jul 20008
Trewollack25 May 19857 Aug 19974

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

1980–2026

Survey records by year

Each bar shows how many survey visits recorded brown / sea trout that year.

Fish measured by surveyors

Measured length distribution

See how the 1,250 measured fish were spread across different length ranges.

Smallest
3.7 cm
Lower quarter
6.6 cm
Median
12.2 cm
Upper quarter
15.3 cm
Largest
35.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ruthern

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

Bullhead European eel Atlantic salmon Brook lamprey

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 →