Bullhead · Cottus gobio

Bullhead in the River Etherow

Largest measured bullhead: 7.9 cm

The largest bullhead measured in Environment Agency surveys of the River Etherow was 7.9 cm, recorded at Etet30 on 15 April 2004.

Across 2 measured bullhead, the median measured length was 7.8 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 Etherow.

See bullhead records across England →

Most recent observation11 June 2025Etet30

Largest measured bullhead: 7.9 cm
Median length: 7.8 cm
Fish measured: 2
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
7.9 cm	15 Apr 2004	Etet30	79578
7.6 cm	15 Apr 2004	Etet30	79578

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
Etet30	15 Apr 2004	11 Jun 2025	2
Etet20	9 May 2013	9 Jun 2025	2
Et04	23 May 2001	23 May 2001	1

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

2001–2025

Survey records by year

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

101

002

003

104

005

006

007

008

009

010

011

012

113

014

015

016

017

018

019

020

021

022

023

024

225

Fish measured by surveyors

Measured length distribution

See how the 2 measured fish were spread across different length ranges.

Smallest: 7.6 cm
Lower quarter: 7.7 cm
Median: 7.8 cm
Upper quarter: 7.8 cm
Largest: 7.9 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Etherow

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

Brown / sea trout Minnow Gudgeon Chub Roach 3-spined stickleback

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 →