Brook lamprey · Lampetra planeri

Brook lamprey in the Lowley Brook

Largest measured brook lamprey: 14 cm

The largest brook lamprey measured in Environment Agency surveys of the Lowley Brook was 14 cm, recorded at Hurdon Bridge on 20 July 2022.

Across 27 measured brook lamprey, the median measured length was 11.1 cm.

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

See brook lamprey records across England →

Most recent observation20 July 2022Little Comfort · 10 fish

Largest measured brook lamprey: 14 cm
Median length: 11.1 cm
Fish measured: 27
Survey locations: 2

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
14 cm	20 Jul 2022	Hurdon Bridge	161827
14 cm	30 Jun 2016	Hurdon Bridge	148687
13.7 cm	21 Jul 2010	Little Comfort	123126
13.2 cm	20 Jul 2022	Little Comfort	161832
13 cm	20 Jul 2022	Little Comfort	161832
13 cm	5 Aug 2016	Little Comfort	148855
12.6 cm	5 Aug 2016	Little Comfort	148855
12.5 cm	30 Jun 2016	Hurdon Bridge	148687
12.4 cm	30 Jun 2016	Hurdon Bridge	148687
11.7 cm	5 Aug 2016	Little Comfort	148855

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
Little Comfort	21 Jul 2010	20 Jul 2022	3
Hurdon Bridge	20 Jul 2010	20 Jul 2022	3

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

2010–2022

Survey records by year

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

210

011

012

013

014

015

216

017

018

019

020

021

222

Fish measured by surveyors

Measured length distribution

See how the 27 measured fish were spread across different length ranges.

Smallest: 5.2 cm
Lower quarter: 9 cm
Median: 11.1 cm
Upper quarter: 12.6 cm
Largest: 14 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Lowley Brook

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

Brown / sea trout Bullhead Atlantic salmon European eel Stone loach 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 →