RiverFish

Brook lamprey · Lampetra planeri

Brook lamprey in the River Ribble

Largest measured brook lamprey: 18 cm

The largest brook lamprey measured in Environment Agency surveys of the River Ribble was 18 cm, recorded at Downstream Edisford Bridge on 18 July 2014.

Across 28 measured brook lamprey, the median measured length was 11.5 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 Ribble.

See brook lamprey records across England →

Most recent observation26 June 2024Downstream Edisford Bridge · 1 fish
Largest measured brook lamprey
18 cm
Median length
11.5 cm
Fish measured
28
Survey locations
6

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.

LengthSurvey dateSurvey locationSurvey ID
18 cm18 Jul 2014Downstream Edisford Bridge141992
17.2 cm13 May 2010Upstream Nappa Ford121657
14 cm13 May 2010Hollins Barn (aka New Hall farm)121697
13.5 cm13 May 2010Upstream Nappa Ford121657
13 cm8 Jun 2016Upstream Nappa Ford148220
12.5 cm14 Jul 2014Upstream Nappa Ford141993
12.5 cm13 May 2010Upstream Nappa Ford121657
12.5 cm21 Aug 1992Settle Junction Near Mearbeck114458
12 cm14 May 2010Paythorne Bridge121652
12 cm13 May 2010Upstream Nappa Ford121657

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 surveyedFirst recordedLast recordedVisits finding brook lamprey
Downstream Edisford Bridge18 Jul 201426 Jun 20242
West Bradford Bridge24 Jun 202424 Jun 20241
Paythorne Bridge14 May 201024 Aug 20232
Upstream Nappa Ford13 May 201029 Jun 20224
Hollins Barn (aka New Hall farm)13 May 201013 May 20101
Settle Junction Near Mearbeck21 Aug 199221 Aug 19921

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

1992–2024

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 28 measured fish were spread across different length ranges.

Smallest
8 cm
Lower quarter
11 cm
Median
11.5 cm
Upper quarter
12.5 cm
Largest
18 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ribble

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

Atlantic salmon Brown / sea trout European eel Chub Dace Gudgeon

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 →