RiverFish

Bullhead · Cottus gobio

Bullhead in the River Main Camel

Largest measured bullhead: 9.3 cm

The largest bullhead measured in Environment Agency surveys of the River Main Camel was 9.3 cm, recorded at Helstone Woods on 15 August 2013.

Across 1,964 measured bullhead, the median measured length was 5.4 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 Camel.

See bullhead records across England →

Most recent observation29 June 2026Trefrew · 18 fish
Largest measured bullhead
9.3 cm
Median length
5.4 cm
Fish measured
1,964
Survey locations
31

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 cm15 Aug 2013Helstone Woods137881
9.1 cm29 Jul 2021Helstone Woods160667
9.1 cm29 Jul 2021Helstone Woods160667
9.1 cm7 Jul 2021u/s Kenningstock Weir160661
9 cm30 Jun 2022Helstone Woods161638
9 cm6 Jun 2022u/s Kenningstock Weir161636
9 cm21 Jul 2008Helstone Woods112138
8.9 cm30 Jun 2022Helstone Woods161638
8.9 cm15 Aug 2013Helstone Woods137881
8.8 cm29 Jul 2021Helstone Woods160667

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
Trefrew3 Jul 198529 Jun 202633
u/s Kenningstock Weir1 Sept 200516 Jun 202610
Gam7 Aug 198017 Jul 202526
d/s Kenningstock Weir19 Sept 200511 Jul 20255
Helstone Woods12 Jul 20069 Jul 202515
Helsbury11 Aug 202319 Jul 20242
Hengar24 Jul 202310 Jul 20242
Tresarrett8 Aug 19802 Jul 20249
Lower Wenford29 Jun 20232 Jul 20242
Colesent1 Aug 20231 Jul 20242
Upstream Gam27 Jun 202427 Jun 20241
Downstream Pencarrow8 Jun 202327 Jun 20242
Upstream Trecarne12 Aug 202318 Jun 20242
Lower Kenningstock18 Jul 202318 Jun 20242
Wenford Bridge5 Aug 198029 Jun 202310
Waterland6 Aug 198016 Jun 20238
Grogley Halt26 Jul 200016 Jun 20236
Trecarne6 Aug 198014 Jun 202312
Pencarrow24 Jul 19808 Jun 202313
Trekeek9 Jun 201124 May 20233
u/s Camelford Fish Pass Dip 41 Sept 20081 Sept 20081
u/s Camelford Fish Pass Dip 31 Sept 20081 Sept 20081
d/s Camelford Fish Pass Dip 21 Sept 20081 Sept 20081
d/s Camelford Fish Pass Dip 11 Sept 20081 Sept 20081
Dunmere1 Aug 198026 Jul 20065
Hendra15 Jul 198028 Jun 200610
Kenningstock28 Jul 198025 Jul 200511
Trela2 Sept 199417 Jul 20004
Shellwood (u/s Croy)10 Jul 199710 Jul 19971
Lower Croy9 Jul 19979 Jul 19971
u/s Worthyvale5 Sept 19945 Sept 19941

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 1,964 measured fish were spread across different length ranges.

Smallest
1.2 cm
Lower quarter
3.3 cm
Median
5.4 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 Main Camel

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

Brown / sea trout Atlantic salmon European eel Brook lamprey 3-spined stickleback 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 →