Stone loach · Barbatula barbatula

Stone loach in the River Brett (Main Reaches)

Largest measured stone loach: 13 cm

The largest stone loach measured in Environment Agency surveys of the River Brett (Main Reaches) was 13 cm, recorded at Chelsworth on 11 March 1988.

Across 424 measured stone loach, the median measured length was 8.5 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 Brett (Main Reaches).

See stone loach records across England →

Most recent observation9 April 2026Waterhouse Farm · 20 fish

Largest measured stone loach: 13 cm
Median length: 8.5 cm
Fish measured: 424
Survey locations: 13

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
13 cm	11 Mar 1988	Chelsworth	13735
11.7 cm	25 Sept 2013	Peyton Hall	140035
11.7 cm	25 Sept 2013	Peyton Hall	140035
11.3 cm	3 May 2024	Higham FGS	165726
11.3 cm	11 Apr 2014	Waterhouse Farm	140720
11.2 cm	25 Sept 2013	Semer A	140032
11.1 cm	16 Apr 2018	Cobbolds Mill	152538
11 cm	25 Sept 2013	Peyton Hall	140035
11 cm	28 Mar 2006	Waterhouse Farm	90515
10.9 cm	25 Sept 2013	Semer A	140032

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
Waterhouse Farm	18 Apr 1997	9 Apr 2026	11
Higham FGS	4 Apr 2006	7 Apr 2026	9
Hadleigh Town	7 Apr 2006	26 Apr 2024	3
Chelsworth	11 Mar 1988	26 Apr 2018	3
Cobbolds Mill	20 Mar 1985	16 Apr 2018	4
Cosford Bridge	19 Dec 1984	13 Apr 2018	5
Hadleigh STW	10 Mar 1988	30 Sept 2013	4
Semer A	16 Feb 1982	25 Sept 2013	5
Peyton Hall	25 Feb 1988	25 Sept 2013	5
Cherry Hill	22 Mar 1991	20 Apr 2006	3
Downstream Mill Farm	25 Mar 1982	5 Apr 2006	2
Upstream Mill Farm	17 Apr 1997	29 Mar 2006	2
Semer B (Dairy Farm - River Brett)	17 Feb 1982	17 Feb 1982	1

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

1982–2026

Survey records by year

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

382

083

184

185

086

087

388

089

090

191

092

093

194

095

096

497

098

099

600

001

002

003

004

005

1006

007

008

009

210

011

512

313

214

015

216

017

618

019

020

021

222

023

324

025

226

Fish measured by surveyors

Measured length distribution

See how the 424 measured fish were spread across different length ranges.

Smallest: 3.7 cm
Lower quarter: 7.6 cm
Median: 8.5 cm
Upper quarter: 9.3 cm
Largest: 13 cm

0–99 mm

380

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Brett (Main Reaches)

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

European eel Pike Roach Gudgeon Dace Perch

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 →