RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Tas

Largest measured brown / sea trout: 57 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Tas was 57 cm, recorded at Downstream Stoke Mill on 11 September 1992.

Across 835 measured brown / sea trout, the median measured length was 15.6 cm.

Surveyors recorded weights for 55 brown / sea trout. The median was 1.3 oz (0.037 kg) and the largest recorded weight was 8.1 oz (0.23 kg).

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

See brown / sea trout records across England →

Most recent observation2 April 2026Tasburgh Mill Farm · 13 fish
Largest measured brown / sea trout
57 cm
Median length
15.6 cm
Fish measured
835
Survey locations
6

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
57 cm11 Sept 1992Downstream Stoke Mill17404
55.7 cm6 May 2016Downstream Stoke Mill148300
54 cm25 Apr 2024Markshall Bridge166218
53.8 cm8 May 2013Downstream Stoke Mill135975
53.3 cm9 May 2013Upstream Shotesham Park135984
52.5 cm28 Apr 2016Upstream Shotesham Park148297
51.5 cm27 Apr 2016Markshall Bridge148265
51.2 cm25 Apr 2024Markshall Bridge166218
50.9 cm8 Apr 2010Downstream Stoke Mill121365
49.8 cm6 Apr 2010Markshall Bridge121342

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
Tasburgh Mill Farm1 Oct 19922 Apr 202614
Flordon Common28 Apr 19871 Apr 202618
Downstream Stoke Mill11 Sept 19922 May 20248
Upstream Shotesham Park9 May 201330 Apr 20244
Markshall Bridge15 Apr 200525 Apr 20246
Upstream Tasburgh Hall7 Apr 20057 Apr 20051

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

1987–2026

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 835 measured fish were spread across different length ranges.

Smallest
2.2 cm
Lower quarter
12.3 cm
Median
15.6 cm
Upper quarter
20.5 cm
Largest
57 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 55 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0 oz (0.001 kg)
Median
1.3 oz (0.037 kg)
Upper quarter
2 oz (0.0565 kg)
Heaviest
8.1 oz (0.23 kg)

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

More fish in this river

Explore the River Tas

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

European eel Stone loach Roach Bullhead Dace Pike

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 →