Brook lamprey · Lampetra planeri

Brook lamprey in the River Esk

Largest measured brook lamprey: 13 cm

The largest brook lamprey measured in Environment Agency surveys of the River Esk was 13 cm, recorded at 4.3.1 Glaisdale Beck , Glaisdale on 4 October 2017.

This is the only individual brook lamprey length in the dataset for this river.

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

See brook lamprey records across England →

Most recent observation4 October 20174.3.1 Glaisdale Beck , Glaisdale · 3 fish

Largest measured brook lamprey: 13 cm
Length sample: 1 fish
Survey records: 5
Survey locations: 4

Individual EA measurements

Largest measured brook lamprey

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
13 cm	4 Oct 2017	4.3.1 Glaisdale Beck , Glaisdale	151821

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

Explore the river

Where brook lamprey were found

Each point marks a survey location with at least one brook lamprey 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 brook lamprey
4.3.1 Glaisdale Beck , Glaisdale	4 Oct 2017	4 Oct 2017	1
6.0 Toll Road, Grosmont ESK/SA/Q/003	4 Sept 2013	4 Sept 2013	1
4.0 Lealholm ESK/SA/Q/002	10 Oct 2000	27 Sept 2002	2
3.0 Lawns Farm	6 Oct 1999	6 Oct 1999	1

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

1999–2017

Survey records by year

Each bar shows how many survey visits recorded brook lamprey that year.

199

100

001

102

003

004

005

006

007

008

009

010

011

012

113

014

015

016

117

Fish measured by surveyors

Recorded length

One individual length was recorded for this fish and river.

Recorded length: 13 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Esk

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

Brown / sea trout Atlantic salmon Stone loach European eel Minnow 3-spined stickleback

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 →