Rainbow trout · Oncorhynchus mykiss

Rainbow trout in the Rothley Brook

Largest measured rainbow trout: 23.5 cm

The largest rainbow trout measured in Environment Agency surveys of the Rothley Brook was 23.5 cm, recorded at Merry Lees on 12 June 2012.

Across 4 measured rainbow trout, the median measured length was 21 cm.

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

See rainbow trout records across England →

Most recent observation12 June 2012Merry Lees · 2 fish

Largest measured rainbow trout: 23.5 cm
Median length: 21 cm
Fish measured: 4
Survey locations: 3

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
23.5 cm	12 Jun 2012	Merry Lees	131536
22.2 cm	12 Jun 2012	Anstey	131534
19.8 cm	12 Jun 2012	Merry Lees	131536
16.3 cm	12 Jan 2001	Ratby Bridge	79306

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
Merry Lees	12 Jun 2012	12 Jun 2012	1
Anstey	12 Jun 2012	12 Jun 2012	1
Ratby Bridge	12 Jan 2001	12 Jan 2001	1

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

2001–2012

Survey records by year

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

101

002

003

004

005

006

007

008

009

010

011

212

Fish measured by surveyors

Measured length distribution

See how the 4 measured fish were spread across different length ranges.

Smallest: 16.3 cm
Lower quarter: 18.9 cm
Median: 21 cm
Upper quarter: 22.5 cm
Largest: 23.5 cm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Rothley Brook

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

Bullhead Minnow 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 →