RiverFish

Brook lamprey · Lampetra planeri

Brook lamprey in the Burn

Largest measured brook lamprey: 14 cm

The largest brook lamprey measured in Environment Agency surveys of the Burn was 14 cm, recorded at Burn Ford on 6 June 2024.

Across 69 measured brook lamprey, the median measured length was 11.4 cm.

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

See brook lamprey records across England →

Most recent observation1 June 2026Burn Ford · 5 fish
Largest measured brook lamprey
14 cm
Median length
11.4 cm
Fish measured
69
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.

LengthSurvey dateSurvey locationSurvey ID
14 cm6 Jun 2024Burn Ford165071
13.7 cm5 Jun 2013Burn Ford136410
13.7 cm5 Jun 2013Burn Ford136410
13.5 cm12 Jun 2014Burn Ford141125
13.5 cm31 May 2012Burn Ford131375
13.4 cm6 Jun 2024Burn Ford165071
13.2 cm31 May 2016Burn Ford148147
13 cm6 Jun 2019Burn Ford154636
13 cm6 Jun 2019Burn Ford154636
13 cm12 Jun 2014Burn Ford141125

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
Burn Ford6 Jul 20051 Jun 202612
Burn Bridge16 Sept 200911 Jul 20193

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

2005–2026

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 69 measured fish were spread across different length ranges.

Smallest
6.3 cm
Lower quarter
9.8 cm
Median
11.4 cm
Upper quarter
12.5 cm
Largest
14 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Burn

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

Brown / sea trout Bullhead Atlantic salmon European eel

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 →