Stone loach · Barbatula barbatula

Stone loach in the Costa Beck

Largest measured stone loach: 11.2 cm

The largest stone loach measured in Environment Agency surveys of the Costa Beck was 11.2 cm, recorded at Costa Beck Upstream Pickering Beck DERBT107 on 20 September 2012.

Across 7 measured stone loach, the median measured length was 9.6 cm.

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

See stone loach records across England →

Most recent observation30 August 2023Costa Beck Upstream Pickering Beck DERBT107

Largest measured stone loach: 11.2 cm
Median length: 9.6 cm
Fish measured: 7
Survey locations: 2

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
11.2 cm	20 Sept 2012	Costa Beck Upstream Pickering Beck DERBT107	133782
10.6 cm	20 Sept 2012	Costa Beck Upstream Pickering Beck DERBT107	133782
10.1 cm	20 Sept 2012	Costa Beck Upstream Pickering Beck DERBT107	133782
9.6 cm	20 Sept 2012	Costa beck at Sleightholme Fm	133781
9.3 cm	20 Sept 2012	Costa Beck Upstream Pickering Beck DERBT107	133782
8.1 cm	20 Sept 2012	Costa Beck Upstream Pickering Beck DERBT107	133782
7.2 cm	20 Sept 2012	Costa Beck Upstream Pickering Beck DERBT107	133782

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
Costa Beck Upstream Pickering Beck DERBT107	25 Sept 1997	30 Aug 2023	9
Costa beck at Sleightholme Fm	20 Sept 2012	20 Sept 2012	1

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

1997–2023

Survey records by year

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

197

098

099

000

001

102

103

104

105

006

007

008

009

010

111

212

113

014

015

016

017

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 7 measured fish were spread across different length ranges.

Smallest: 7.2 cm
Lower quarter: 8.7 cm
Median: 9.6 cm
Upper quarter: 10.4 cm
Largest: 11.2 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Costa Beck

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

Bullhead Brown / sea trout Rainbow trout Grayling Minnow 3-spined stickleback

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 →