RiverFish

River lamprey · Lampetra fluviatilis

River lamprey in the River Coquet

Largest measured river lamprey: 14 cm

The largest river lamprey measured in Environment Agency surveys of the River Coquet was 14 cm, recorded at River Coquet at Pauperhaugh on 10 July 2013.

Across 56 measured river lamprey, the median measured length was 10.8 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 Coquet.

See river lamprey records across England →

Most recent observation13 July 2013Swarland Burn · 1 fish
Largest measured river lamprey
14 cm
Median length
10.8 cm
Fish measured
56
Survey locations
7

Individual EA measurements

Largest measured river lamprey

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
14 cm10 Jul 2013River Coquet at Pauperhaugh137084
14 cm8 Jul 2013Black Burn at Snitter137002
14 cm5 Jul 2013River Alwin136977
13.5 cm10 Jul 2013River Coquet at Pauperhaugh137084
13.5 cm10 Jul 2013River Coquet at Pauperhaugh137084
13.1 cm7 Jul 2011River Alwin129228
13 cm10 Jul 2013River Coquet at Pauperhaugh137084
13 cm10 Jul 2013River Coquet at Pauperhaugh137084
13 cm8 Jul 2013River Coquet at Elyhaugh137003
13 cm8 Jul 2013Black Burn at Snitter137002

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where river lamprey were found

Each point marks a survey location with at least one river 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 river lamprey
Swarland Burn13 Jul 201313 Jul 20131
River Coquet at Pauperhaugh3 Aug 201010 Jul 20132
River Coquet at Elyhaugh20 Jul 20058 Jul 20132
Black Burn at Snitter8 Jul 20138 Jul 20131
River Alwin7 Jul 20115 Jul 20132
Hepple Bridge3 Aug 20103 Aug 20101
Low Alwinton2 Aug 20092 Aug 20091

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

2005–2013

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 56 measured fish were spread across different length ranges.

Smallest
5.5 cm
Lower quarter
9.3 cm
Median
10.8 cm
Upper quarter
12.6 cm
Largest
14 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Coquet

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

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

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 →