RiverFish

Brook lamprey · Lampetra planeri

Brook lamprey in the River East Looe

Largest measured brook lamprey: 14.8 cm

The largest brook lamprey measured in Environment Agency surveys of the River East Looe was 14.8 cm, recorded at Trussel Bridge on 15 June 2026.

Across 67 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 East Looe.

See brook lamprey records across England →

Most recent observation15 June 2026Trussel Bridge · 14 fish
Largest measured brook lamprey
14.8 cm
Median length
11.5 cm
Fish measured
67
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.

LengthSurvey dateSurvey locationSurvey ID
14.8 cm15 Jun 2026Trussel Bridge181878
14.3 cm15 Jun 2026Trussel Bridge181878
14.2 cm12 Jun 2019Trussel Bridge154640
14.1 cm22 Jun 2018Trussel Bridge153047
14 cm12 Jun 2019Trussel Bridge154640
14 cm4 Jul 2008Highwood111679
13.9 cm22 Jun 2018Trussel Bridge153047
13.9 cm22 Jun 2018Trussel Bridge153047
13.8 cm9 Jul 2015Trussel Bridge145376
13.5 cm22 Jun 2018Trussel Bridge153047

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
Trussel Bridge23 Jul 200915 Jun 202611
Coombe Junction19 Aug 201419 Aug 20141
u/s Land Looe24 Sept 200824 Sept 20081
Highwood4 Jul 20084 Jul 20081

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

2008–2026

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 67 measured fish were spread across different length ranges.

Smallest
5.5 cm
Lower quarter
10.4 cm
Median
11.5 cm
Upper quarter
12.5 cm
Largest
14.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River East Looe

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

Brown / sea trout Bullhead European eel Atlantic salmon

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 →