Stone loach · Barbatula barbatula

Stone loach in the River Main Tavy

Largest measured stone loach: 10.4 cm

The largest stone loach measured in Environment Agency surveys of the River Main Tavy was 10.4 cm, recorded at Brook Mill on 2 September 2019.

Across 100 measured stone loach, the median measured length was 8.7 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 Main Tavy.

See stone loach records across England →

Most recent observation9 September 2025Langham Wood · 1 fish

Largest measured stone loach: 10.4 cm
Median length: 8.7 cm
Fish measured: 100
Survey locations: 9

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
10.4 cm	2 Sept 2019	Brook Mill	155622
10.3 cm	2 Sept 2019	Brook Mill	155622
10.2 cm	2 Sept 2019	Brook Mill	155622
10.2 cm	25 Jun 2008	Brook Mill	111462
10.1 cm	2 Sept 2019	Brook Mill	155622
10.1 cm	2 Sept 2019	Brook Mill	155622
10 cm	2 Sept 2019	Brook Mill	155622
9.8 cm	21 Aug 2025	Brook Mill	179157
9.8 cm	2 Sept 2019	Brook Mill	155622
9.8 cm	2 Sept 2019	Brook Mill	155622

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
Langham Wood	8 Sept 1983	9 Sept 2025	4
Balstone	13 Aug 1998	9 Sept 2025	5
Denham Woods	13 Aug 1998	27 Aug 2025	5
Brook Mill	19 Jul 1983	21 Aug 2025	14
Rowdens Wood	20 Jul 2023	20 Jul 2023	1
Lumburn Confluence	13 Jul 2023	13 Jul 2023	1
u/s Double Waters	22 Jul 2002	27 Jun 2023	2
u/s Denham Bridge	22 Jul 2002	22 Jul 2002	1
Sausage Factory	11 Jul 1998	22 Jul 2002	2

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 stone loach that year.

283

084

085

086

087

088

089

090

091

092

093

094

095

096

097

598

099

100

001

602

103

104

105

006

307

108

009

010

011

012

313

014

015

016

017

018

219

020

021

022

423

124

425

Fish measured by surveyors

Measured length distribution

See how the 100 measured fish were spread across different length ranges.

Smallest: 3.4 cm
Lower quarter: 8.2 cm
Median: 8.7 cm
Upper quarter: 9.2 cm
Largest: 10.4 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Tavy

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

Brown / sea trout European eel Atlantic salmon Bullhead Minnow

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 →