RiverFish

Brook lamprey · Lampetra planeri

Brook lamprey in the Bristol Avon main river

Largest measured brook lamprey: 16 cm

The largest brook lamprey measured in Environment Agency surveys of the Bristol Avon main river was 16 cm, recorded at Lacock (Te) on 9 September 2014.

Across 5 measured brook lamprey, the median measured length was 15.5 cm.

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

See brook lamprey records across England →

Most recent observation9 September 2014Lacock (Te) · 3 fish
Largest measured brook lamprey
16 cm
Median length
15.5 cm
Fish measured
5
Survey locations
3

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
16 cm9 Sept 2014Lacock (Te)142610
15.6 cm9 Sept 2014Lacock (Te)142610
15.5 cm1 Sept 2010Chippenham (Te)123618
15 cm19 Jul 2011Christian Malford (Te)127303
14 cm9 Sept 2014Lacock (Te)142610

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
Lacock (Te)9 Sept 20149 Sept 20141
Christian Malford (Te)19 Jul 201119 Jul 20111
Chippenham (Te)1 Sept 20101 Sept 20101

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

2010–2014

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 5 measured fish were spread across different length ranges.

Smallest
14 cm
Lower quarter
15 cm
Median
15.5 cm
Upper quarter
15.6 cm
Largest
16 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Bristol Avon main river

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

Roach Minnow Perch Chub Dace Pike

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 →