Stone loach · Barbatula barbatula

Stone loach in the River Fynn

Largest measured stone loach: 12.8 cm

The largest stone loach measured in Environment Agency surveys of the River Fynn was 12.8 cm, recorded at Martlesham Bridge on 4 February 2011.

Across 146 measured stone loach, the median measured length was 9 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 Fynn.

See stone loach records across England →

Most recent observation7 March 2017Martlesham Bridge · 2 fish

Largest measured stone loach: 12.8 cm
Median length: 9 cm
Fish measured: 146
Survey locations: 5

Individual EA measurements

Largest measured stone loach

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
12.8 cm	4 Feb 2011	Martlesham Bridge	125901
12.3 cm	4 Feb 2011	Martlesham Bridge	125901
12 cm	4 Feb 2011	Martlesham Bridge	125901
11.6 cm	9 Feb 2006	Tuddenham	90062
11.5 cm	7 Apr 1998	Martlesham Bridge	13456
11.4 cm	10 Oct 2008	Special Survey MB	115812
11.3 cm	9 Feb 2011	Witnesham Hall	125914
11.3 cm	4 Feb 2011	Little Bealings Bridge	125902
11.3 cm	4 Feb 2011	Little Bealings Bridge	125902
11.3 cm	9 Feb 2006	Tuddenham	90062

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

Explore the river

Where stone loach were found

Each point marks a survey location with at least one stone loach 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 stone loach
Tuddenham	6 Apr 1998	7 Mar 2017	4
Martlesham Bridge	7 Apr 1998	7 Mar 2017	3
Witnesham Hall	9 Feb 2011	9 Feb 2011	1
Little Bealings Bridge	6 Apr 1998	4 Feb 2011	3
Special Survey MB	10 Oct 2008	10 Oct 2008	1

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

1998–2017

Survey records by year

Each bar shows how many survey visits recorded stone loach that year.

398

099

000

001

002

003

004

005

206

007

108

009

010

411

012

013

014

015

016

217

Fish measured by surveyors

Measured length distribution

See how the 146 measured fish were spread across different length ranges.

Smallest: 3.9 cm
Lower quarter: 6.3 cm
Median: 9 cm
Upper quarter: 10 cm
Largest: 12.8 cm

0–99 mm

106

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Fynn

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

3-spined stickleback European eel 10-spined stickleback Brown / sea trout Flounder

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 →