Brook lamprey · Lampetra planeri

Brook lamprey in the River Main Strat

Largest measured brook lamprey: 16 cm

The largest brook lamprey measured in Environment Agency surveys of the River Main Strat was 16 cm, recorded at Rodd's Bridge on 16 September 2011.

Across 12 measured brook lamprey, the median measured length was 13 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 Main Strat.

See brook lamprey records across England →

Most recent observation16 September 2011Rodd's Bridge · 3 fish

Largest measured brook lamprey: 16 cm
Median length: 13 cm
Fish measured: 12
Survey locations: 5

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.

Length	Survey date	Survey location	Survey ID
16 cm	16 Sept 2011	Rodd's Bridge	128007
14 cm	16 Sept 2011	Rodd's Bridge	128007
14 cm	5 Aug 2010	Poughill Mill	123381
13.5 cm	16 Sept 2011	Rodd's Bridge	128007
13.5 cm	6 Aug 2010	Pinch Bridge	123385
13 cm	5 Aug 2010	Hunthill Quarry	123383
13 cm	5 Aug 2010	Poughill Mill	123381
13 cm	3 Aug 2010	Howard	123216
12.5 cm	5 Aug 2010	Hunthill Quarry	123383
12.5 cm	5 Aug 2010	Hunthill Quarry	123383

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 surveyed	First recorded	Last recorded	Visits finding brook lamprey
Rodd's Bridge	16 Sept 2011	16 Sept 2011	1
Pinch Bridge	6 Aug 2010	6 Aug 2010	1
Poughill Mill	5 Aug 2010	5 Aug 2010	1
Hunthill Quarry	5 Aug 2010	5 Aug 2010	1
Howard	3 Aug 2010	3 Aug 2010	1

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

2010–2011

Survey records by year

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

410

111

Fish measured by surveyors

Measured length distribution

See how the 12 measured fish were spread across different length ranges.

Smallest: 12 cm
Lower quarter: 12.5 cm
Median: 13 cm
Upper quarter: 13.6 cm
Largest: 16 cm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Strat

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

Brown / sea trout Bullhead European eel Minnow Stone loach

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 →