Stone loach · Barbatula barbatula

Stone loach in the Trelash Stream

Largest measured stone loach: 12.1 cm

The largest stone loach measured in Environment Agency surveys of the Trelash Stream was 12.1 cm, recorded at Trelash Stream on 29 June 2021.

Across 6 measured stone loach, the median measured length was 7.5 cm.

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

See stone loach records across England →

Most recent observation29 June 2021Trelash Stream · 3 fish

Largest measured stone loach: 12.1 cm
Median length: 7.5 cm
Fish measured: 6
Survey locations: 1

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
12.1 cm	29 Jun 2021	Trelash Stream	160697
11 cm	29 Jun 2021	Trelash Stream	160697
7.7 cm	29 Jun 2021	Trelash Stream	160697
7.2 cm	8 Jul 2015	Trelash Stream	145374
7 cm	8 Jul 2015	Trelash Stream	145374
6.2 cm	8 Jul 2015	Trelash Stream	145374

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
Trelash Stream	24 Jul 1984	29 Jun 2021	7

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

1984–2021

Survey records by year

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

184

085

086

087

088

089

090

091

092

193

094

095

196

097

098

099

000

001

002

103

104

005

006

007

008

009

010

011

012

013

014

115

016

017

018

019

020

121

Fish measured by surveyors

Measured length distribution

See how the 6 measured fish were spread across different length ranges.

Smallest: 6.2 cm
Lower quarter: 7.1 cm
Median: 7.5 cm
Upper quarter: 10.2 cm
Largest: 12.1 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Trelash Stream

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

Atlantic salmon Brown / sea trout Bullhead

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 →