Brook lamprey · Lampetra planeri

Brook lamprey in the River Dean

Largest measured brook lamprey: 14 cm

The largest brook lamprey measured in Environment Agency surveys of the River Dean was 14 cm, recorded at Dede05 on 21 August 2003.

This is the only individual brook lamprey length in the dataset for this river.

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

See brook lamprey records across England →

Most recent observation21 August 2003Dede05 · 1 fish

Largest measured brook lamprey: 14 cm
Length sample: 1 fish
Survey records: 3
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.

Length	Survey date	Survey location	Survey ID
14 cm	21 Aug 2003	Dede05	76736

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
Dede05	21 Aug 2003	21 Aug 2003	1
De03	15 Aug 1996	15 Aug 1996	1
De02	15 Aug 1996	15 Aug 1996	1

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

1996–2003

Survey records by year

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

296

097

098

099

000

001

002

103

Fish measured by surveyors

Recorded length

One individual length was recorded for this fish and river.

Recorded length: 14 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Dean

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

Brown / sea trout Stone loach Bullhead Minnow Chub Roach

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 →