RiverFish

Brook lamprey · Lampetra planeri

Brook lamprey in the Stringside Stream

Largest measured brook lamprey: 15.6 cm

The largest brook lamprey measured in Environment Agency surveys of the Stringside Stream was 15.6 cm, recorded at DS Stoke Ferry Stringside Stream on 10 November 2010.

Across 43 measured brook lamprey, the median measured length was 12.1 cm.

Surveyors recorded weights for 43 brook lamprey. The median was 0.1 oz (0.003 kg) and the largest recorded weight was 0.2 oz (0.006 kg).

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

See brook lamprey records across England →

Most recent observation19 March 2012DS Stoke Ferry Stringside Stream · 33 fish
Largest measured brook lamprey
15.6 cm
Median length
12.1 cm
Fish measured
43
Survey locations
1

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
15.6 cm10 Nov 2010DS Stoke Ferry Stringside Stream125005
14.3 cm19 Mar 2012DS Stoke Ferry Stringside Stream130162
14 cm3 Apr 2007DS Stoke Ferry Stringside Stream105288
13.7 cm19 Mar 2012DS Stoke Ferry Stringside Stream130162
13.5 cm3 Apr 2007DS Stoke Ferry Stringside Stream105288
13.4 cm19 Mar 2012DS Stoke Ferry Stringside Stream130162
13.1 cm19 Mar 2012DS Stoke Ferry Stringside Stream130162
13 cm3 Apr 2007DS Stoke Ferry Stringside Stream105288
13 cm3 Apr 2007DS Stoke Ferry Stringside Stream105288
12.9 cm19 Mar 2012DS Stoke Ferry Stringside Stream130162

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
DS Stoke Ferry Stringside Stream13 Jan 199319 Mar 20126

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

1993–2012

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 43 measured fish were spread across different length ranges.

Smallest
9 cm
Lower quarter
11.3 cm
Median
12.1 cm
Upper quarter
12.9 cm
Largest
15.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 43 brook lamprey. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.1 oz (0.002 kg)
Median
0.1 oz (0.003 kg)
Upper quarter
0.1 oz (0.003 kg)
Heaviest
0.2 oz (0.006 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Stringside Stream

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

Bullhead European eel Pike Dace Stone loach Spined 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 →