RiverFish

Atlantic salmon · Salmo salar

Atlantic salmon in the River Main Penpont

Largest measured atlantic salmon: 15.7 cm

The largest atlantic salmon measured in Environment Agency surveys of the River Main Penpont was 15.7 cm, recorded at Trerithick on 10 July 2019.

Across 882 measured atlantic salmon, the median measured length was 5.7 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 atlantic salmon records across England →

Most recent observation2 July 2025Trerithick · 72 fish
Largest measured atlantic salmon
15.7 cm
Median length
5.7 cm
Fish measured
882
Survey locations
8

Individual EA measurements

Largest measured atlantic salmon

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

LengthSurvey dateSurvey locationSurvey ID
15.7 cm10 Jul 2019Trerithick155461
14.4 cm10 Jul 2019Trerithick155461
14.4 cm15 Aug 2011Trekennick127462
13.7 cm24 Jun 2015Trerithick145148
13.4 cm4 Aug 2003Finches Bridge77268
13 cm15 Jun 2010Trekennick122457
12.9 cm6 Jul 2017Trerithick151253
12.9 cm29 Jul 2015Trekennick145709
12.8 cm31 Jul 2013Trekennick138009
12.7 cm20 Jun 2013Trerithick136755

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

Explore the river

Where atlantic salmon were found

Each point marks a survey location with at least one atlantic salmon 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 atlantic salmon
Trerithick5 Jul 19842 Jul 202518
Trekennick25 Jun 198423 Aug 202112
Bowithick25 Jun 198424 Jun 20096
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 atlantic salmon that year.

Fish measured by surveyors

Measured length distribution

See how the 882 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
4.7 cm
Median
5.7 cm
Upper quarter
9.6 cm
Largest
15.7 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.

Brown / sea trout 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 →