Brook lamprey · Lampetra planeri

Brook lamprey in the River Little Stour

Largest measured brook lamprey: 19 cm

The largest brook lamprey measured in Environment Agency surveys of the River Little Stour was 19 cm, recorded at The Bench on 25 July 2006.

Across 23 measured brook lamprey, the median measured length was 14 cm.

Surveyors recorded one individual weight: 0.1 oz (0.004 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 Little Stour.

See brook lamprey records across England →

Most recent observation13 June 2024D/s Littlebourne Mill · 1 fish

Largest measured brook lamprey: 19 cm
Median length: 14 cm
Fish measured: 23
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
19 cm	25 Jul 2006	The Bench	103261
18 cm	25 Jul 2006	The Bench	103261
17.5 cm	25 Oct 2004	The Bench	82896
17 cm	13 Jun 2024	D/s Littlebourne Mill	166497
17 cm	25 Jul 2006	The Bench	103261
15.5 cm	25 Jul 2006	The Bench	103261
15.5 cm	25 Oct 2004	The Bench	82896
15 cm	25 Jul 2006	The Bench	103261
14.5 cm	25 Jul 2006	The Bench	103261
14.5 cm	25 Jul 2006	The Bench	103261

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
D/s Littlebourne Mill	13 Jun 2024	13 Jun 2024	1
Seaton Mill Upstream of	26 Sept 2017	26 Sept 2017	1
The Bench	25 Oct 2004	25 Jul 2006	2
Wingham at Britton Farm	4 Aug 2005	4 Aug 2005	1

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

2004–2024

Survey records by year

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

104

105

106

007

008

009

010

011

012

013

014

015

016

117

018

019

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 23 measured fish were spread across different length ranges.

Smallest: 6.6 cm
Lower quarter: 13 cm
Median: 14 cm
Upper quarter: 15.5 cm
Largest: 19 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

One individual weight was recorded for this fish and river. This is a subset of the measured fish and may not represent the whole population.

Recorded weight: 0.1 oz (0.004 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 Little Stour

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

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

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 →