RiverFish

Bullhead · Cottus gobio

Bullhead in the River Lumburn

Largest measured bullhead: 9.3 cm

The largest bullhead measured in Environment Agency surveys of the River Lumburn was 9.3 cm, recorded at Lamerton on 18 June 2019.

Across 497 measured bullhead, the median measured length was 4.5 cm.

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

See bullhead records across England →

Most recent observation15 August 2025d/s Mill Hill · 64 fish
Largest measured bullhead
9.3 cm
Median length
4.5 cm
Fish measured
497
Survey locations
7

Individual EA measurements

Largest measured bullhead

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

LengthSurvey dateSurvey locationSurvey ID
9.3 cm18 Jun 2019Lamerton154694
9 cm8 Jul 2021Lamerton160662
9 cm24 Jul 2013d/s Mill Hill138055
9 cm24 Jul 2013d/s Mill Hill138055
9 cm24 Jul 2013d/s Mill Hill138055
9 cm24 Jul 2013d/s Mill Hill138055
8.9 cm24 Jul 2013d/s Mill Hill138055
8.8 cm8 Jul 2021Lamerton160662
8.8 cm18 Jun 2019Lamerton154694
8.6 cm19 Jul 2017Lamerton150983

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

Explore the river

Where bullhead were found

Each point marks a survey location with at least one bullhead 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 bullhead
d/s Mill Hill10 Aug 198315 Aug 20258
Lamerton3 Aug 198325 Jun 202519
Parswell20 Jul 20234 Jul 20242
u/s Mill Hill10 Aug 19839 Jul 19982
u/s Lumburn3 Aug 19839 Jul 19982
Shilla Mill29 Jul 19838 Jul 19982
d/s Lumburn8 Aug 19838 Aug 19831

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

1983–2025

Survey records by year

Each bar shows how many survey visits recorded bullhead that year.

Fish measured by surveyors

Measured length distribution

See how the 497 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
3.5 cm
Median
4.5 cm
Upper quarter
6.3 cm
Largest
9.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Lumburn

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

Brown / sea trout European eel Atlantic salmon Minnow Stone loach Brook lamprey

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 →