RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Main Fowey

Largest measured brown / sea trout: 63.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Main Fowey was 63.5 cm, recorded at Doublebois on 8 August 2000.

Across 12,314 measured brown / sea trout, the median measured length was 9.1 cm.

Surveyors recorded weights for 6 brown / sea trout. The median was 1 lb 8.7 oz (0.7 kg) and the largest recorded weight was 2 lb 3.3 oz (1 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 Main Fowey.

See brown / sea trout records across England →

Most recent observation10 July 2026Lower Langdon · 92 fish
Largest measured brown / sea trout
63.5 cm
Median length
9.1 cm
Fish measured
12,314
Survey locations
21

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
63.5 cm8 Aug 2000Doublebois104154
63.3 cm31 Aug 2011Doublebois127713
56.2 cm7 Sept 2005Draynes Bridge86675
56 cm1 Sept 2011Respryn Bridge127651
56 cm22 Jul 1994Doublebois104443
55.7 cm21 Aug 2014Doublebois142384
54.7 cm26 Jun 1979Lower Langdon135490
54.3 cm12 Sept 1997Trengale Wood135548
54 cm10 Aug 2000Treverbyn104152
52.1 cm1 Sept 2003Treverbyn77357

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
Lower Langdon11 Aug 197710 Jul 202634
Palmersbridge15 Jun 197729 Jul 202530
Ashford Bridge20 Sept 201219 Sept 20246
Draynes Bridge12 Jul 199416 Sept 202418
Leskernick28 Apr 197821 Aug 202421
Halfway12 Sept 197915 Aug 202410
Trezibbett22 Jun 19777 Aug 202419
Upstream Doublebois Bridge13 Sept 20166 Aug 20245
Brown Queen27 Sept 201231 Aug 20182
Doublebois22 Jul 199421 Aug 20148
Respryn Bridge19 Sept 19791 Sept 20116
Harrowbridge12 Jul 199425 Aug 20117
Treverbyn19 Apr 19772 Aug 201025
Restormel17 Aug 19944 Sept 20085
Glynn13 Sept 197911 Aug 20054
Newbridge17 Aug 19943 Aug 20054
Trengale Wood8 Jul 199422 Apr 20053
Codda8 Jul 199422 Aug 20003
Lamelgate8 Jul 19948 Sept 19974
Westerlake Spawning Beds14 Jun 199514 Jun 19951
Ninestones Spawning Beds14 Jun 199514 Jun 19951

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

1977–2026

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 12,314 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
6.2 cm
Median
9.1 cm
Upper quarter
13 cm
Largest
63.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 6 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
14.1 oz (0.4 kg)
Lower quarter
1 lb 0.8 oz (0.475 kg)
Median
1 lb 8.7 oz (0.7 kg)
Upper quarter
1 lb 12.7 oz (0.8125 kg)
Heaviest
2 lb 3.3 oz (1 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 Main Fowey

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

Bullhead European eel Atlantic salmon Minnow Brook lamprey 3-spined stickleback

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 →