Bullhead · Cottus gobio

Bullhead in the River Cawthorne Dike

Largest measured bullhead: 9.5 cm

The largest bullhead measured in Environment Agency surveys of the River Cawthorne Dike was 9.5 cm, recorded at 25M Upstream Of Track To Farm on 5 September 2011.

Across 28 measured bullhead, the median measured length was 4.5 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 Cawthorne Dike.

See bullhead records across England →

Most recent observation5 September 202525M Upstream Of Track To Farm

Largest measured bullhead: 9.5 cm
Median length: 4.5 cm
Fish measured: 28
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.

Length	Survey date	Survey location	Survey ID
9.5 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701
9 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701
9 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701
8.9 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701
8.3 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701
7.1 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701
7 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701
7 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701
6.8 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701
5 cm	5 Sept 2011	25M Upstream Of Track To Farm	128701

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
25M Upstream Of Track To Farm	17 Oct 2000	5 Sept 2025	3
Low Barugh bridge	19 Apr 1983	19 Sept 1997	4
Cawthorne - Kexborough bridge	18 Jan 1991	18 Jan 1991	1

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

1983–2025

Survey records by year

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

183

084

085

086

087

188

089

090

291

092

093

094

095

096

197

098

099

100

001

002

003

004

005

006

007

008

009

010

111

012

013

014

015

016

017

018

019

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 28 measured fish were spread across different length ranges.

Smallest: 3.7 cm
Lower quarter: 4.1 cm
Median: 4.6 cm
Upper quarter: 7 cm
Largest: 9.5 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Cawthorne Dike

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

Brown / sea trout Minnow Stone loach Gudgeon

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 →