Brook lamprey · Lampetra planeri

Brook lamprey in the River Tove

Largest measured brook lamprey: 15.5 cm

The largest brook lamprey measured in Environment Agency surveys of the River Tove was 15.5 cm, recorded at DS Cappenham Bridge on 1 April 2015.

Across 4 measured brook lamprey, the median measured length was 14.1 cm.

Surveyors recorded weights for 4 brook lamprey. The median was 0.4 oz (0.0105 kg) and the largest recorded weight was 0.7 oz (0.02 kg).

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

See brook lamprey records across England →

Most recent observation5 April 2016Cosgrove Lodge · 2 fish

Largest measured brook lamprey: 15.5 cm
Median length: 14.1 cm
Fish measured: 4
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
15.5 cm	1 Apr 2015	DS Cappenham Bridge	144498
14.1 cm	14 Apr 2015	Cosgrove Lodge	144539
14 cm	5 Apr 2016	Cosgrove Lodge	147920
13 cm	5 Apr 2016	Cosgrove Lodge	147920

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
Cosgrove Lodge	14 Apr 2015	5 Apr 2016	2
DS Cappenham Bridge	1 Apr 2015	1 Apr 2015	1
Milford Leys Farm	11 Feb 1998	11 Feb 1998	1

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

1998–2016

Survey records by year

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

198

099

000

001

002

003

004

005

006

007

008

009

010

011

012

013

014

215

116

Fish measured by surveyors

Measured length distribution

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

Smallest: 13 cm
Lower quarter: 13.8 cm
Median: 14.1 cm
Upper quarter: 14.5 cm
Largest: 15.5 cm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 4 brook lamprey. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.2 oz (0.005 kg)
Lower quarter: 0.2 oz (0.0058 kg)
Median: 0.4 oz (0.0105 kg)
Upper quarter: 0.6 oz (0.0162 kg)
Heaviest: 0.7 oz (0.02 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Tove

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

Dace Bullhead Stone loach Chub Gudgeon Minnow

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 →