Stone loach · Barbatula barbatula

Stone loach in the Cuffley Brook

Largest measured stone loach: 12.1 cm

The largest stone loach measured in Environment Agency surveys of the Cuffley Brook was 12.1 cm, recorded at Flash Lane on 16 October 2015.

Across 1,359 measured stone loach, the median measured length was 7.1 cm.

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

See stone loach records across England →

Most recent observation11 October 2019Flash Lane · 9 fish

Largest measured stone loach: 12.1 cm
Median length: 7.1 cm
Fish measured: 1,359
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
12.1 cm	16 Oct 2015	Flash Lane	147137
11.4 cm	10 Apr 2015	Flash Lane	144538
11.2 cm	10 Apr 2015	Flash Lane	144538
11.2 cm	10 Apr 2015	Flash Lane	144538
11.2 cm	1 Apr 2015	Upstream Wildwoods	144501
11.1 cm	10 Apr 2015	Flash Lane	144538
11 cm	28 Nov 2016	Upstream Wildwoods	150205
10.9 cm	28 Nov 2016	Upstream Wildwoods	150205
10.9 cm	28 Nov 2016	Upstream Wildwoods	150205
10.9 cm	10 Apr 2015	Flash Lane	144538

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
Flash Lane	20 Aug 2014	11 Oct 2019	4
Upstream Wildwoods	31 May 2013	10 Oct 2019	5
Glasgow Stud 2	13 Dec 2013	10 Oct 2019	5
Glasgow Stud	6 Dec 2013	6 Dec 2013	1
Rotenone treatment zone	27 Nov 2013	27 Nov 2013	1

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

2013–2019

Survey records by year

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

413

414

315

216

017

018

319

Fish measured by surveyors

Measured length distribution

See how the 1,359 measured fish were spread across different length ranges.

Smallest: 2.4 cm
Lower quarter: 5.8 cm
Median: 7.1 cm
Upper quarter: 8.7 cm
Largest: 12.1 cm

0–99 mm

1279

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Cuffley Brook

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

3-spined stickleback Minnow Gudgeon Roach Topmouth gudgeon

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 →