Stone loach · Barbatula barbatula

Stone loach in the River Hartlake

Largest measured stone loach: 10.2 cm

The largest stone loach measured in Environment Agency surveys of the River Hartlake was 10.2 cm, recorded at Hartlake Farm on 29 August 1991.

Across 243 measured stone loach, the median measured length was 6.4 cm.

Surveyors recorded weights for 125 stone loach. The median was 0.2 oz (0.005 kg) and the largest recorded weight was 0.4 oz (0.012 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 Hartlake.

See stone loach records across England →

Most recent observation19 September 1991Upper Crannel Farm (Te) · 35 fish

Largest measured stone loach: 10.2 cm
Median length: 6.4 cm
Fish measured: 243
Survey locations: 3

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
10.2 cm	29 Aug 1991	Hartlake Farm	80440
10 cm	29 Aug 1991	Hartlake Farm	80440
9.7 cm	10 Sept 1991	New Farm	80441
9.7 cm	10 Sept 1991	New Farm	80441
9.7 cm	10 Sept 1991	New Farm	80441
9.7 cm	10 Sept 1991	New Farm	80441
9.6 cm	10 Sept 1991	New Farm	80441
9.6 cm	10 Sept 1991	New Farm	80441
9.6 cm	10 Sept 1991	New Farm	80441
9.5 cm	10 Sept 1991	New Farm	80441

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
Upper Crannel Farm (Te)	19 Sept 1991	19 Sept 1991	1
New Farm	10 Sept 1991	10 Sept 1991	1
Hartlake Farm	29 Aug 1991	29 Aug 1991	1

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

1991–1991

Survey records by year

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

391

Fish measured by surveyors

Measured length distribution

See how the 243 measured fish were spread across different length ranges.

Smallest: 1.1 cm
Lower quarter: 5.6 cm
Median: 6.4 cm
Upper quarter: 8.8 cm
Largest: 10.2 cm

0–99 mm

241

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 125 stone loach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.1 oz (0.002 kg)
Median: 0.2 oz (0.005 kg)
Upper quarter: 0.2 oz (0.007 kg)
Heaviest: 0.4 oz (0.012 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 Hartlake

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

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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 →