RiverFish

Bullhead · Cottus gobio

Bullhead in the River Seven

Largest measured bullhead: 9.7 cm

The largest bullhead measured in Environment Agency surveys of the River Seven was 9.7 cm, recorded at R.Seven at Rosedale Abbey DERBT96 on 30 August 2016.

Across 642 measured bullhead, the median measured length was 5.9 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 Seven.

See bullhead records across England →

Most recent observation4 September 2024R.Seven at Rosedale Abbey DERBT96
Largest measured bullhead
9.7 cm
Median length
5.9 cm
Fish measured
642
Survey locations
6

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
9.7 cm30 Aug 2016R.Seven at Rosedale Abbey DERBT96149125
9.6 cm28 Aug 2013R.Seven at Rosedale Abbey DERBT96138469
9.1 cm30 Aug 2016R.Seven at Rosedale Abbey DERBT96149125
9.1 cm10 Aug 2011R.Seven at Barugh Bridge127960
9 cm23 Aug 2018R.Seven at Rosedale Abbey DERBT96153206
8.8 cm28 Aug 2013R.Seven at Rosedale Abbey DERBT96138469
8.7 cm11 Sept 2014R.Seven at Rosedale Abbey DERBT96142765
8.7 cm6 Sept 2012R.Seven at Rosedale Abbey DERBT96133515
8.6 cm13 Sept 2022R.Seven at Rosedale Abbey DERBT96161426
8.6 cm26 Aug 2021R.Seven at Rosedale Abbey DERBT96160136

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
R.Seven at Sinnington27 Jun 20064 Sept 20244
R.Seven at Rosedale Abbey DERBT9611 Sept 19974 Sept 202418
R.Seven at Normanby27 Jun 20064 Sept 20244
R.Seven at Barugh Bridge29 Jun 200618 Sept 20123
R.Seven at Low Askew27 Jun 20067 Sept 20123
R.Seven at Red House Fm4 Jul 20064 Jul 20061

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

1997–2024

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 642 measured fish were spread across different length ranges.

Smallest
1.7 cm
Lower quarter
5.1 cm
Median
5.9 cm
Upper quarter
6.8 cm
Largest
9.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Seven

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

Brown / sea trout Stone loach European eel Grayling 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 →