Rainbow trout · Oncorhynchus mykiss

Rainbow trout in the River Main Valency

Largest measured rainbow trout: 19.4 cm

The largest rainbow trout measured in Environment Agency surveys of the River Main Valency was 19.4 cm, recorded at Newmill on 3 September 2003.

Across 15 measured rainbow trout, the median measured length was 15.5 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 Valency.

See rainbow trout records across England →

Most recent observation30 August 2017Newmill · 4 fish

Largest measured rainbow trout: 19.4 cm
Median length: 15.5 cm
Fish measured: 15
Survey locations: 2

Individual EA measurements

Largest measured rainbow 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
19.4 cm	3 Sept 2003	Newmill	77610
17.7 cm	23 Aug 2011	Boscastle	127556
17.6 cm	30 Aug 2017	Newmill	151662
17.5 cm	5 Sept 2003	Boscastle	77615
17.5 cm	3 Sept 2003	Newmill	77610
16.3 cm	3 Sept 2003	Newmill	77610
16.1 cm	30 Aug 2017	Newmill	151662
15.5 cm	30 Aug 2017	Newmill	151662
15.5 cm	21 Aug 2008	Newmill	113579
14.9 cm	24 Aug 2011	Newmill	127550

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

Explore the river

Where rainbow trout were found

Each point marks a survey location with at least one rainbow 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 rainbow trout
Newmill	29 Sept 1987	30 Aug 2017	5
Boscastle	30 Sept 1987	23 Aug 2011	3

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

1987–2017

Survey records by year

Each bar shows how many survey visits recorded rainbow trout that year.

287

088

089

090

091

092

093

094

095

096

097

098

099

000

001

002

203

004

005

006

007

108

009

010

211

012

013

014

015

016

117

Fish measured by surveyors

Measured length distribution

See how the 15 measured fish were spread across different length ranges.

Smallest: 10.5 cm
Lower quarter: 14.3 cm
Median: 15.5 cm
Upper quarter: 17.5 cm
Largest: 19.4 cm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Valency

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

Brown / sea trout European eel Bullhead Atlantic salmon

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 →