Brook lamprey · Lampetra planeri

Brook lamprey in the River Whitewater

Largest measured brook lamprey: 15 cm

The largest brook lamprey measured in Environment Agency surveys of the River Whitewater was 15 cm, recorded at Greywell Upstream Deptford Bridge on 25 October 2007.

Across 3 measured brook lamprey, the median measured length was 14 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 Whitewater.

See brook lamprey records across England →

Most recent observation13 April 2010Park Farm

Largest measured brook lamprey: 15 cm
Median length: 14 cm
Fish measured: 3
Survey locations: 3

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
15 cm	25 Oct 2007	Greywell Upstream Deptford Bridge	108006
14 cm	25 Oct 2007	Greywell	108005
11 cm	25 Oct 2007	Greywell	108005

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
Park Farm	8 Apr 2003	13 Apr 2010	6
Greywell	21 Nov 1991	3 Nov 2009	6
Greywell Upstream Deptford Bridge	25 Oct 2007	25 Oct 2007	1

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

1991–2010

Survey records by year

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

191

092

093

094

095

096

097

098

099

000

101

002

103

204

205

006

207

108

209

110

Fish measured by surveyors

Measured length distribution

See how the 3 measured fish were spread across different length ranges.

Smallest: 11 cm
Lower quarter: 12.5 cm
Median: 14 cm
Upper quarter: 14.5 cm
Largest: 15 cm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Whitewater

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

Brown / sea trout Gudgeon Chub European eel Dace Perch

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 →