Stone loach · Barbatula barbatula

Stone loach in the Willow Brook

Largest measured stone loach: 12.5 cm

The largest stone loach measured in Environment Agency surveys of the Willow Brook was 12.5 cm, recorded at Weldon on 9 March 1995.

Across 85 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 Willow Brook.

See stone loach records across England →

Most recent observation23 October 2018Fotheringhay

Largest measured stone loach: 12.5 cm
Median length: 8.5 cm
Fish measured: 85
Survey locations: 7

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
12.5 cm	9 Mar 1995	Weldon	54457
11 cm	9 Mar 1995	Weldon	54457
10.5 cm	6 Aug 1998	Downstream Deene Lake	54466
10.5 cm	4 Aug 1998	Lodge Farm	54465
10.5 cm	4 Aug 1998	Weldon	54464
10.5 cm	4 Aug 1998	Weldon	54464
10.5 cm	9 Mar 1995	Lodge Farm	54458
10.5 cm	9 Mar 1995	Weldon	54457
10.5 cm	9 Mar 1995	Weldon	54457
10 cm	8 Sept 1998	Woodnewton	54471

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
Fotheringhay	23 Oct 2018	23 Oct 2018	1
Bulwick	18 Apr 1995	23 Oct 2018	8
Woodnewton	8 Sept 1998	29 May 2015	5
Downstream Deene Lake	6 Aug 1998	1 May 2015	2
Lodge Farm	9 Mar 1995	28 Apr 2015	3
Alder Farm	12 Aug 1998	12 Aug 1998	1
Weldon	10 Feb 1989	4 Aug 1998	3

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

1989–2018

Survey records by year

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

189

090

091

092

093

094

395

096

097

698

099

000

201

002

003

004

005

106

007

008

009

010

211

112

213

014

315

016

017

218

Fish measured by surveyors

Measured length distribution

See how the 85 measured fish were spread across different length ranges.

Smallest: 5.5 cm
Lower quarter: 7.5 cm
Median: 8.5 cm
Upper quarter: 10 cm
Largest: 12.5 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Willow Brook

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

Chub Roach Gudgeon Perch Bullhead European eel

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 →