RiverFish

Bullhead · Cottus gobio

Bullhead in the River Main De Lank

Largest measured bullhead: 8.3 cm

The largest bullhead measured in Environment Agency surveys of the River Main De Lank was 8.3 cm, recorded at Keybridge on 13 July 2006.

Across 267 measured bullhead, the median measured length was 5.8 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 Main De Lank.

See bullhead records across England →

Most recent observation9 July 2026Keybridge · 22 fish
Largest measured bullhead
8.3 cm
Median length
5.8 cm
Fish measured
267
Survey locations
1

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
8.3 cm13 Jul 2006Keybridge100175
7.8 cm12 Jul 2022Keybridge161637
7.7 cm13 Jul 2006Keybridge100175
7.6 cm12 Jul 2022Keybridge161637
7.6 cm13 Jul 2006Keybridge100175
7.5 cm24 Jul 2018Keybridge152981
7.4 cm9 Jul 2026Keybridge182139
7.4 cm5 Jul 2010Keybridge122861
7.3 cm12 Jul 2022Keybridge161637
7.3 cm12 Jul 2011Keybridge126956

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
Keybridge31 Jul 19809 Jul 202626

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

1980–2026

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 267 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
3.7 cm
Median
5.8 cm
Upper quarter
6.4 cm
Largest
8.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main De Lank

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

Brown / sea trout European eel Atlantic salmon 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 →