Brook lamprey · Lampetra planeri

Brook lamprey in the River Hodder

Largest measured brook lamprey: 18 cm

The largest brook lamprey measured in Environment Agency surveys of the River Hodder was 18 cm, recorded at Slaidburn Green on 6 August 2009.

Across 9 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 Hodder.

See brook lamprey records across England →

Most recent observation21 July 2014Slaidburn Green · 5 fish

Largest measured brook lamprey: 18 cm
Median length: 15 cm
Fish measured: 9
Survey locations: 1

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 cm	6 Aug 2009	Slaidburn Green	118302
16 cm	21 Jul 2014	Slaidburn Green	141987
15 cm	21 Jul 2014	Slaidburn Green	141987
15 cm	21 Jul 2014	Slaidburn Green	141987
15 cm	21 Jul 2014	Slaidburn Green	141987
14 cm	21 Jul 2014	Slaidburn Green	141987
13 cm	9 Aug 2010	Slaidburn Green	123325
11.5 cm	24 Aug 2012	Slaidburn Green	133023
9 cm	27 Jun 2013	Slaidburn Green	137457

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
Slaidburn Green	6 Aug 2009	21 Jul 2014	5

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

2009–2014

Survey records by year

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

109

110

011

112

113

114

Fish measured by surveyors

Measured length distribution

See how the 9 measured fish were spread across different length ranges.

Smallest: 9 cm
Lower quarter: 13 cm
Median: 15 cm
Upper quarter: 15 cm
Largest: 18 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Hodder

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

Atlantic salmon Brown / sea trout European eel Grayling

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 →