Bullhead · Cottus gobio

Bullhead in the Relief Channel

Largest measured bullhead: 9.2 cm

The largest bullhead measured in Environment Agency surveys of the Relief Channel was 9.2 cm, recorded at Wiggenhall Bridge on 15 September 2011.

Across 34 measured bullhead, the median measured length was 5.3 cm.

Surveyors recorded one individual weight: 2.8 oz (0.079 kg).

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

See bullhead records across England →

Most recent observation9 August 2017Wiggenhall Bridge · 1 fish

Largest measured bullhead: 9.2 cm
Median length: 5.3 cm
Fish measured: 34
Survey locations: 8

Individual EA measurements

Largest measured bullhead

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
9.2 cm	15 Sept 2011	Wiggenhall Bridge	127952
8.3 cm	15 Sept 2011	Wiggenhall Bridge	127952
8.2 cm	15 Sept 2011	Wiggenhall Bridge	127952
8 cm	10 Jul 2014	DS Stow Bridge	141668
8 cm	9 Aug 2005	Downham Bridge	85364
7.7 cm	9 Aug 2017	Wiggenhall Bridge	151144
7.7 cm	7 Aug 2017	Denver Sluice	151142
7.5 cm	9 Aug 2005	Downham Bridge	85364
7.5 cm	5 Aug 2005	DS Downham Bridge	85330
7.2 cm	15 Sept 2011	Wiggenhall Bridge	127952

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 surveyed	First recorded	Last recorded	Visits finding bullhead
Wiggenhall Bridge	15 Sept 2011	9 Aug 2017	3
DS Stow Bridge	16 Sept 2011	8 Aug 2017	3
Denver Sluice	16 Sept 1996	7 Aug 2017	6
DS Denver Residual Sluice (Eel Monitoring)	24 Jul 2012	24 Jul 2012	1
Stow Bridge	19 Aug 2008	19 Aug 2008	1
Gullpit Farm Stow Bridge	19 Aug 2008	19 Aug 2008	1
Downham Bridge	9 Aug 2005	9 Aug 2005	1
DS Downham Bridge	5 Aug 2005	5 Aug 2005	1

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

1996–2017

Survey records by year

Each bar shows how many survey visits recorded bullhead that year.

196

097

098

099

000

001

002

003

004

205

006

007

408

009

010

311

112

013

314

015

016

317

Fish measured by surveyors

Measured length distribution

See how the 34 measured fish were spread across different length ranges.

Smallest: 2.9 cm
Lower quarter: 4.1 cm
Median: 5.4 cm
Upper quarter: 7.4 cm
Largest: 9.2 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

One individual weight was recorded for this fish and river. This is a subset of the measured fish and may not represent the whole population.

Recorded weight: 2.8 oz (0.079 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Relief Channel

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

Perch Roach Ruffe Zander Pike European eel

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 →