RiverFish

Bullhead · Cottus gobio

Bullhead in the River Seph

Largest measured bullhead: 10.1 cm

The largest bullhead measured in Environment Agency surveys of the River Seph was 10.1 cm, recorded at Raisdale beck at Chop Gate on 16 August 2012.

Across 247 measured bullhead, the median measured length was 6.3 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 Seph.

See bullhead records across England →

Most recent observation11 September 2024R.Seph, Laskill Bridge DERBT51
Largest measured bullhead
10.1 cm
Median length
6.3 cm
Fish measured
247
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
10.1 cm16 Aug 2012Raisdale beck at Chop Gate133131
9.6 cm17 Aug 2012Stable Holme133128
9.3 cm17 Aug 2012Stable Holme133128
9.3 cm27 Oct 2011Raisdale beck at Chop Gate129638
9.1 cm17 Aug 2012Stable Holme133128
9 cm16 Aug 2012Raisdale beck at Chop Gate133131
8.9 cm17 Aug 2012R.Seph d/s Fangdale beck conf.133139
8.8 cm17 Aug 2012R.Seph d/s Fangdale beck conf.133139
8.6 cm3 Sept 2012R.Seph, Laskill Bridge DERBT51133543
8.6 cm17 Aug 2012Stable Holme133128

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.Seph, Laskill Bridge DERBT513 Oct 200111 Sept 202410
Raisdale beck at Chop Gate27 Jun 200610 Sept 20245
R.Seph d/s Fangdale beck conf.27 Jun 200610 Sept 20243
Ledge beck27 Jun 200610 Sept 20244
Bilsdale beck at Chop Gate27 Jun 200610 Sept 20246
Fangdale beck22 Aug 201213 Aug 20192
Stable Holme10 Aug 201117 Aug 20122

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

2001–2024

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 247 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
4.2 cm
Median
6.3 cm
Upper quarter
7.4 cm
Largest
10.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Seph

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

Brown / sea trout

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 →