Brown / sea trout · Salmo trutta

Brown / sea trout in the Poltesco Stream

Largest measured brown / sea trout: 20.6 cm

The largest brown / sea trout measured in Environment Agency surveys of the Poltesco Stream was 20.6 cm, recorded at Goonhilly Downs on 27 May 2021.

Across 214 measured brown / sea trout, the median measured length was 7.3 cm.

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

See brown / sea trout records across England →

Most recent observation17 May 2023Goonhilly Downs · 24 fish

Largest measured brown / sea trout: 20.6 cm
Median length: 7.3 cm
Fish measured: 214
Survey locations: 2

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.

Length	Survey date	Survey location	Survey ID
20.6 cm	27 May 2021	Goonhilly Downs	160508
19.3 cm	19 May 2014	Poltesco	140985
19.1 cm	19 May 2014	Poltesco	140985
18.9 cm	17 May 2023	Goonhilly Downs	162519
18.1 cm	19 May 2014	Poltesco	140985
18.1 cm	22 Sept 2009	Goonhilly Downs	120756
17.5 cm	19 May 2014	Poltesco	140985
17.4 cm	19 May 2014	Poltesco	140985
17.2 cm	19 May 2014	Poltesco	140985
17.2 cm	19 May 2014	Poltesco	140985

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 surveyed	First recorded	Last recorded	Visits finding brown / sea trout
Goonhilly Downs	20 Jun 2008	17 May 2023	5
Poltesco	19 May 2014	19 May 2014	1

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

2008–2023

Survey records by year

Each bar shows how many survey visits recorded brown / sea trout that year.

108

109

010

011

012

013

114

015

016

017

018

019

020

121

122

123

Fish measured by surveyors

Measured length distribution

See how the 214 measured fish were spread across different length ranges.

Smallest: 2.1 cm
Lower quarter: 4.1 cm
Median: 7.4 cm
Upper quarter: 11.7 cm
Largest: 20.6 cm

0–99 mm

126

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Poltesco Stream

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

Minnow European eel

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 →