RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Main River Biss

Largest measured brown / sea trout: 42.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the Main River Biss was 42.5 cm, recorded at Upstream Yarn Brook on 16 September 1997.

Across 33 measured brown / sea trout, the median measured length was 18.5 cm.

Surveyors recorded weights for 7 brown / sea trout. The median was 8.2 oz (0.233 kg) and the largest recorded weight was 1 lb 11.9 oz (0.792 kg).

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

See brown / sea trout records across England →

Most recent observation18 October 2016Penleigh Farm (Se-03) · 5 fish
Largest measured brown / sea trout
42.5 cm
Median length
18.5 cm
Fish measured
33
Survey locations
5

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
42.5 cm16 Sept 1997Upstream Yarn Brook77047
26.6 cm24 Oct 2007Ashton Hill Farm108707
26.5 cm11 Jul 2005u/s Blackball Hatch (Te)85029
26.5 cm4 Apr 2003Penleigh Farm (Se-03)75824
26.3 cm24 Oct 2007Ashton Hill Farm108707
25.1 cm18 Oct 2016Penleigh Farm (Se-03)149792
24.7 cm11 Jul 2005u/s Blackball Hatch (Te)85029
23.8 cm18 Oct 2016Penleigh Farm (Se-03)149792
23.4 cm18 Oct 2016Penleigh Farm (Se-03)149792
22.5 cm16 Sept 1997Upstream Yarn Brook77047

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
Penleigh Farm (Se-03)4 Apr 200318 Oct 20164
Ashton Hill Farm24 Oct 200728 Jun 20122
Brook House16 May 201216 May 20121
u/s Blackball Hatch (Te)11 Jul 200511 Jul 20051
Upstream Yarn Brook16 Sept 199716 Sept 19971

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

1997–2016

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 33 measured fish were spread across different length ranges.

Smallest
6.6 cm
Lower quarter
15.5 cm
Median
18.5 cm
Upper quarter
23.4 cm
Largest
42.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 7 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
1.2 oz (0.033 kg)
Lower quarter
4.2 oz (0.12 kg)
Median
8.2 oz (0.233 kg)
Upper quarter
9.3 oz (0.2625 kg)
Heaviest
1 lb 11.9 oz (0.792 kg)

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

More fish in this river

Explore the Main River Biss

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

Bullhead Minnow Chub Dace 3-spined stickleback 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 →