Brook lamprey · Lampetra planeri

Brook lamprey in the River Stour

Largest measured brook lamprey: 18.9 cm

The largest brook lamprey measured in Environment Agency surveys of the River Stour was 18.9 cm, recorded at Tidmington on 30 June 2009.

Across 17 measured brook lamprey, the median measured length was 15 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 Stour.

See brook lamprey records across England →

Most recent observation12 August 2010Tidmington · 1 fish

Largest measured brook lamprey: 18.9 cm
Median length: 15 cm
Fish measured: 17
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
18.9 cm	30 Jun 2009	Tidmington	117930
17.5 cm	9 Oct 1999	Mitford Bridge	80310
17.5 cm	11 Oct 1990	Wichford Mill	80297
17.5 cm	9 Oct 1990	Mitford Bridge	81981
16 cm	30 Jun 2009	Tidmington	117930
15.9 cm	30 Jun 2009	Tidmington	117930
15.6 cm	30 Jun 2009	Tidmington	117930
15.3 cm	12 Aug 2010	Tidmington	123413
15 cm	30 Jun 2009	Tidmington	117930
15 cm	30 Jun 2009	Tidmington	117930

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
Tidmington	8 Aug 2006	12 Aug 2010	3
Mitford Bridge	9 Oct 1990	9 Oct 1999	2
Traitors Ford	11 Oct 1990	28 Jun 1994	2
Wichford Mill	11 Oct 1990	11 Oct 1990	1

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

1990–2010

Survey records by year

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

390

091

092

093

194

095

096

097

098

199

000

001

002

003

004

005

106

007

008

109

110

Fish measured by surveyors

Measured length distribution

See how the 17 measured fish were spread across different length ranges.

Smallest: 8.8 cm
Lower quarter: 12 cm
Median: 15 cm
Upper quarter: 16 cm
Largest: 18.9 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Stour

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

Bullhead Chub Dace Minnow Stone loach Roach

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 →