Stone loach · Barbatula barbatula

Stone loach in the River Itchen

Largest measured stone loach: 12.2 cm

The largest stone loach measured in Environment Agency surveys of the River Itchen was 12.2 cm, recorded at Caravan Pool, Highbridge on 10 September 2024.

Across 23 measured stone loach, the median measured length was 8.6 cm.

Surveyors recorded weights for 3 stone loach. The median was 0.2 oz (0.006 kg) and the largest recorded weight was 0.3 oz (0.009 kg).

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

See stone loach records across England →

Most recent observation4 September 2025Wolvesey Lodge · 6 fish

Largest measured stone loach: 12.2 cm
Median length: 8.6 cm
Fish measured: 23
Survey locations: 22

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
12.2 cm	10 Sept 2024	Caravan Pool, Highbridge	167610
10.1 cm	16 Aug 2011	Shawford Park	127447
10.1 cm	21 Sept 2006	Bishopstoke Lock	102322
9.5 cm	16 Aug 2011	Shawford Park	127447
9.5 cm	19 Sept 2005	Bishopstoke Lock	86523
9.2 cm	16 Aug 2011	Shawford Park	127447
9 cm	16 Aug 2011	Shawford Park	127447
9 cm	16 Aug 2011	Shawford Park	127447
8.9 cm	16 Aug 2011	Shawford Park	127447
8.8 cm	16 Aug 2011	Shawford Park	127447

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
Wolvesey Lodge	27 Aug 2008	4 Sept 2025	8
Hockley Mill	14 Sept 2009	4 Sept 2025	4
Shipley Bridge, Otterbourne	6 Sept 2019	3 Sept 2025	4
Brambridge	2 Sept 2015	3 Sept 2025	8
Bishopstoke Barge	31 Aug 2004	29 Aug 2025	9
Shawford Park	1 Sept 2010	28 Aug 2025	9
Abbots Worthy, u/s Mill	16 Oct 2018	19 Oct 2024	2
Caravan Pool, Highbridge	11 Sept 2018	10 Sept 2024	4
Lower Itchen Fishery - d/s viaduct	28 Aug 2009	6 Sept 2024	7
Brambridge main "Kanara"	6 Sept 2023	6 Sept 2023	1
Fulling Mill, Abbott's Worthy	12 Aug 2009	17 Aug 2023	5
Swimming Pool, Winchester	18 Aug 2009	31 Aug 2022	5
St Cross Bridge	15 Sept 2015	30 Aug 2022	5
Shawford, upstream of Norris's Bridge	13 Sept 2018	2 Sept 2021	3
Mansbridge	16 Sept 2019	16 Sept 2019	1
Abbots Worthy, d/s M3	16 Oct 2018	16 Oct 2018	1
Abbott's Barton, duck's nest spinney	27 Sept 2010	27 Sept 2010	1
Abbott's Barton Upper	27 Sept 2010	27 Sept 2010	1
Chilland House	11 Aug 2009	11 Aug 2009	1
Bishopstoke Lock	19 Sept 2005	21 Sept 2006	2
Railway	25 Sept 2002	25 Sept 2002	1
Shawford, downtream of Norris's Bridge	24 Sept 2002	24 Sept 2002	1

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

2002–2025

Survey records by year

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

202

003

104

105

106

007

108

609

410

211

012

413

014

815

016

417

518

1019

520

521

622

623

524

725

Fish measured by surveyors

Measured length distribution

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

Smallest: 6.4 cm
Lower quarter: 7.9 cm
Median: 8.6 cm
Upper quarter: 9.1 cm
Largest: 12.2 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 3 stone loach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.2 oz (0.005 kg)
Lower quarter: 0.2 oz (0.0055 kg)
Median: 0.2 oz (0.006 kg)
Upper quarter: 0.3 oz (0.0075 kg)
Heaviest: 0.3 oz (0.009 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Itchen

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

Brown / sea trout Bullhead Minnow European eel Atlantic salmon Grayling

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 →