RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Main Penpont

Largest measured brown / sea trout: 35.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Main Penpont was 35.5 cm, recorded at Trerithick on 21 June 2010.

Across 1,605 measured brown / sea trout, the median measured length was 11.5 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 Main Penpont.

See brown / sea trout records across England →

Most recent observation2 July 2025Trerithick · 64 fish
Largest measured brown / sea trout
35.5 cm
Median length
11.5 cm
Fish measured
1,605
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
35.5 cm21 Jun 2010Trerithick122471
34.3 cm8 Jul 2009Trerithick117767
32 cm14 Jul 2008Trerithick111865
31 cm6 Aug 2002Finches Bridge72813
28.4 cm10 Jul 2019Trerithick155461
28.1 cm24 Jun 2015Trerithick145148
28.1 cm24 Jun 2015Trerithick145148
27.9 cm19 Jun 2012Trerithick131620
27.7 cm4 Aug 2004Finches Bridge81502
27.6 cm15 Jun 2010Trekennick122457

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
Trerithick5 Jul 19842 Jul 202518
Trekennick25 Jun 198423 Aug 202112
Bowithick25 Jun 198422 Jun 20218
d/s Finches Bridge (spawning bed C )21 Jun 200821 Jun 20081
Finches Bridge25 Jun 198420 Jul 20058
Tresmaine27 Jul 198419 Aug 19994
d/s Finches Bridge (spawning bed B)13 Aug 199321 Jun 19962
d/s Finches Bridge (spawning bed A)13 Aug 199313 Aug 19931

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

1984–2025

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 1,605 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
6.2 cm
Median
11.5 cm
Upper quarter
15.2 cm
Largest
35.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Penpont

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

Atlantic salmon Bullhead European eel Minnow Brook lamprey Stone loach

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 →