RiverFish

River lamprey · Lampetra fluviatilis

River lamprey in the River Hull

Largest measured river lamprey: 36 cm

The largest river lamprey measured in Environment Agency surveys of the River Hull was 36 cm, recorded at Upstream of Hull Bridge HULLCRS/(LOWER)3 on 12 October 2005.

Across 4 measured river lamprey, the median measured length was 33.8 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 Hull.

See river lamprey records across England →

Most recent observation22 October 2007us Weel Bridge · 1 fish
Largest measured river lamprey
36 cm
Median length
33.8 cm
Fish measured
4
Survey locations
3

Individual EA measurements

Largest measured river lamprey

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
36 cm12 Oct 2005Upstream of Hull Bridge HULLCRS/(LOWER)387798
34.5 cm28 Oct 2004Hempholme Lock HULLCRS/(LOWER)183633
33 cm28 Oct 2004Hempholme Lock HULLCRS/(LOWER)183633
32.9 cm22 Oct 2007us Weel Bridge108661

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where river lamprey were found

Each point marks a survey location with at least one river 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 river lamprey
us Weel Bridge22 Oct 200722 Oct 20071
Upstream of Hull Bridge HULLCRS/(LOWER)312 Oct 200512 Oct 20051
Hempholme Lock HULLCRS/(LOWER)128 Oct 200428 Oct 20041

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

2004–2007

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 4 measured fish were spread across different length ranges.

Smallest
32.9 cm
Lower quarter
33 cm
Median
33.8 cm
Upper quarter
34.9 cm
Largest
36 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Hull

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

Pike European eel 3-spined stickleback Bullhead Perch Minnow

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 →