Stone loach · Barbatula barbatula

Stone loach in the Guilden Brook

Largest measured stone loach: 11.8 cm

The largest stone loach measured in Environment Agency surveys of the Guilden Brook was 11.8 cm, recorded at Meldreth Road Bridge on 28 May 2025.

Across 23 measured stone loach, the median measured length was 9.2 cm.

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

See stone loach records across England →

Most recent observation28 May 2025Meldreth Road Bridge · 4 fish

Largest measured stone loach: 11.8 cm
Median length: 9.2 cm
Fish measured: 23
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
11.8 cm	28 May 2025	Meldreth Road Bridge	177125
11.5 cm	28 May 2025	Meldreth Road Bridge	177125
11.3 cm	28 May 2025	Meldreth Road Bridge	177125
11.2 cm	21 May 2013	Meldreth Road Bridge	136051
11 cm	28 May 2025	Meldreth Road Bridge	177125
10.7 cm	21 May 2013	Meldreth Road Bridge	136051
10.7 cm	21 May 2013	Meldreth Road Bridge	136051
10.6 cm	21 May 2013	Meldreth Road Bridge	136051
10.3 cm	21 May 2013	Meldreth Road Bridge	136051
9.4 cm	21 May 2013	Meldreth Road Bridge	136051

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
Meldreth Road Bridge	30 Jan 1990	28 May 2025	6

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

1990–2025

Survey records by year

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

190

091

092

193

094

095

096

097

098

099

000

001

002

003

004

005

006

007

008

009

110

011

012

113

014

015

116

017

018

019

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 23 measured fish were spread across different length ranges.

Smallest: 4.2 cm
Lower quarter: 8.3 cm
Median: 9.2 cm
Upper quarter: 10.7 cm
Largest: 11.8 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Guilden Brook

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

Bullhead Minnow 3-spined stickleback Brown / sea trout

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 →