RiverFish

Bullhead · Cottus gobio

Bullhead in the Flasby Beck

Largest measured bullhead: 9.7 cm

The largest bullhead measured in Environment Agency surveys of the Flasby Beck was 9.7 cm, recorded at u/s Eshton Beck Confluence on 24 August 2006.

Across 513 measured bullhead, the median measured length was 5.7 cm.

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

See bullhead records across England →

Most recent observation20 September 2019Flasby · 48 fish
Largest measured bullhead
9.7 cm
Median length
5.7 cm
Fish measured
513
Survey locations
3

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 cm24 Aug 2006u/s Eshton Beck Confluence121110
9.4 cm24 Aug 2006u/s Eshton Beck Confluence121110
9.1 cm29 Aug 2007u/s Eshton Beck Confluence121123
8.8 cm27 Aug 2009u/s Hetton Bridge121138
8.8 cm29 Aug 2007u/s Eshton Beck Confluence121123
8.8 cm29 Aug 2007u/s Eshton Beck Confluence121123
8.7 cm29 Aug 2007u/s Eshton Beck Confluence121123
8.7 cm29 Aug 2007u/s Eshton Beck Confluence121123
8.7 cm24 Aug 2006u/s Eshton Beck Confluence121110
8.7 cm24 Aug 2006u/s Eshton Beck Confluence121110

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
Flasby15 Aug 200220 Sept 20192
u/s Eshton Beck Confluence24 Aug 200628 Aug 20145
u/s Hetton Bridge24 Aug 200627 Aug 20094

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

2002–2019

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 513 measured fish were spread across different length ranges.

Smallest
2.3 cm
Lower quarter
4.1 cm
Median
5.7 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 Flasby Beck

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

Brown / sea trout Stone 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 →