Topmouth gudgeon · Pseudorasbora parva

Topmouth gudgeon in the Turkey Brook

Largest measured topmouth gudgeon: 9 cm

The largest topmouth gudgeon measured in Environment Agency surveys of the Turkey Brook was 9 cm, recorded at Rotenone neutralisation zone on 27 November 2013.

Across 48 measured topmouth gudgeon, the median measured length was 5.2 cm.

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

See topmouth gudgeon records across England →

Most recent observation30 June 2026Forty Hall · 1 fish

Largest measured topmouth gudgeon: 9 cm
Median length: 5.2 cm
Fish measured: 48
Survey locations: 3

Individual EA measurements

Largest measured topmouth gudgeon

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 cm	27 Nov 2013	Rotenone neutralisation zone	140279
8.1 cm	27 Nov 2013	Rotenone neutralisation zone	140279
7.8 cm	30 Jun 2026	Forty Hall	182132
7.7 cm	26 Mar 2009	Forty Hall TMG	125992
7.4 cm	4 May 2006	Forty Hall	90868
7.1 cm	26 Mar 2009	Forty Hall TMG	125992
7 cm	20 Apr 2010	Forty Hall TMG	121403
6.7 cm	20 Apr 2010	Forty Hall TMG	121403
6.6 cm	27 Nov 2013	Rotenone neutralisation zone	140279
6.6 cm	27 Nov 2013	Rotenone neutralisation zone	140279

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where topmouth gudgeon were found

Each point marks a survey location with at least one topmouth gudgeon 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 topmouth gudgeon
Forty Hall	4 May 2006	30 Jun 2026	3
Rotenone neutralisation zone	27 Nov 2013	27 Nov 2013	1
Forty Hall TMG	26 Mar 2009	20 Apr 2010	2

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

2006–2026

Survey records by year

Each bar shows how many survey visits recorded topmouth gudgeon that year.

106

007

008

109

110

011

112

113

014

015

016

017

018

019

020

021

022

023

024

025

126

Fish measured by surveyors

Measured length distribution

See how the 48 measured fish were spread across different length ranges.

Smallest: 2.1 cm
Lower quarter: 3.8 cm
Median: 5.3 cm
Upper quarter: 6.4 cm
Largest: 9 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Turkey Brook

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

Minnow Stone loach Roach 3-spined stickleback Bullhead 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 →