RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Tees

Largest measured stone loach: 11.8 cm

The largest stone loach measured in Environment Agency surveys of the River Tees was 11.8 cm, recorded at Temporal Coarse, Blackwell Bridge on 12 September 2007.

Across 68 measured stone loach, the median measured length was 7.5 cm.

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

See stone loach records across England →

Most recent observation10 October 2025SAP/BT Annual, River Greta - Brignall Mill
Largest measured stone loach
11.8 cm
Median length
7.5 cm
Fish measured
68
Survey locations
79

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.

LengthSurvey dateSurvey locationSurvey ID
11.8 cm12 Sept 2007Temporal Coarse, Blackwell Bridge108639
11.6 cm22 Sept 2008BT Sentinel, River Balder, Balderhead115724
11 cm22 Sept 2008BT Sentinel, River Balder, Balderhead115724
11 cm22 Sept 2008BT Sentinel, River Balder, Balderhead115724
10.3 cm22 Sept 2008SAP/BT Quin, River Balder, Downstream Hury115720
10.1 cm22 Sept 2008SAP/BT Quin, River Balder, Downstream Hury115720
9.9 cm22 Sept 2008SAP/BT Quin, River Balder, Downstream Hury115720
9.3 cm22 Sept 2008SAP/BT Quin, River Balder, Downstream Hury115720
9.2 cm22 Sept 2008SAP/BT Quin, Spa Beck, Old Spa Farm115723
9.2 cm22 Sept 2008SAP/BT Quin, River Balder, Downstream Hury115720

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 surveyedFirst recordedLast recordedVisits finding stone loach
SAP/BT Annual, River Greta - Brignall Mill30 Nov 199510 Oct 202520
SAP/BT Quin, Middelton In Teesdale18 Sept 19959 Oct 20255
SAP/BT Quin, Barnard Castle18 Sept 19959 Oct 20253
SAP/BT Annual, Summerhouse Beck - Piercebridge17 Oct 20008 Oct 202510
SAP/BT Annual, Bowlees Beck - D/s Picnic Site12 Oct 20008 Oct 202515
SAP/BT Annual, River Balder - Cotherstone1 Dec 199524 Sept 202517
Temporal Coarse, Low Coniscliffe8 Aug 200111 Sept 202511
Temporal Coarse, Neasham13 Aug 200111 Aug 202519
Temporal Coarse, Croft15 Aug 200111 Aug 202517
Temporal Coarse, Low Moor18 Sept 20024 Aug 202519
SAP/BT Annual, Ornella Farm3 Oct 200216 Oct 202315
SAP/BT Quin, River Leven, Crathorne1 Jul 200526 Jun 20233
SAP/BT Quin, River Leven, Bense Bridge29 Jun 200526 Jun 20233
SAP/BT Quin, River Leven D/s Foxton Bridge8 Jun 201126 Jun 20232
SAP/BT Quin, River Leven, Hutton Rudby9 Jun 201123 Jun 20232
SAP/BT Quin, River Leven, Angrove West Farm29 Jun 200523 Jun 20233
SAP/BT Quin, River Leven, Little Ayton29 Jun 200522 Jun 20232
SAP/BT Quin, River Leven, Broughton Bridge Beck7 Jun 201122 Jun 20232
SAP/BT Annual, Deepdale Beck - Barnard Castle8 Nov 199528 Oct 202215
Spatial Coarse, Saltersgill Beck, Saltersgill17 Nov 200414 Sept 20223
SAP/BT Quin, Percy Beck, Barnard Castle12 Oct 200014 Sept 20224
SAP/BT Quin, Thorsgill Beck, Nr Boldron13 Sept 202213 Sept 20221
SAP/BT Quin, Scur Beck, North Gill Farm13 Sept 202213 Sept 20221
SAP/BT Quin, Wilden Beck, Nr Doe Park Farm12 Oct 20008 Sept 20224
SAP/BT Quin, River Balder, Downstream Hury1 Nov 19998 Sept 20226
SAP/BT Quin, Rowton Beck, Low Wray Farm22 Aug 202222 Aug 20221
River Tees near Metalband Hill21 Oct 201821 Oct 20181
Temporal Coarse, Low Haile Bridge19 Sept 200218 Sept 201814
River Balder West Park Farm10 Sept 201710 Sept 20171
SAP/BT Annual, Egglestone Abbey15 Sept 199521 Oct 201613
SAP/BT Quin, Clow Beck, Willow Bridge12 Sept 201612 Sept 20161
SAP/BT Annual, Clow Beck - Monk End Farm8 Nov 199512 Sept 201615
SAP/BT Annual, Broken Scar13 Oct 199910 Aug 201615
Temporal Coarse, Blackwell Bridge7 Oct 200210 Sept 201512
Ormsby Beck - North Ormsby20 Sept 20136 Sept 20152
Marton West Beck - Golf Course20 Sept 20136 Sept 20152
Marton West Beck - Arlington Road20 Sept 20136 Sept 20152
WFD O Clow Beck at Clow Beck Farm3 Oct 20133 Oct 20131
Spatial Coarse, Saltersgill Beck, High Worsall23 Sept 201323 Sept 20131
Ormsby Beck - Berwick Hills20 Sept 201320 Sept 20131
SAP/BT Quin, River Greta, Rutherford Bridge22 Jun 200516 Sept 20112
SAP/BT Quin, River Greta, Greta Bridge16 Sept 201116 Sept 20111
SAP/BT Quin, River Greta, Gilmonby16 Sept 201116 Sept 20111
SAP/BT Quin, River Greta, Eller Beck, Rutherford21 Jun 200514 Sept 20112
SAP/BT Quin, River Leven, Potto Beck, Sexhow9 Jun 20119 Jun 20111
Greatham Beck, Newton Hanzard16 Nov 20048 Jun 20112
Temporal Coarse, Swine Lairs u/s ford10 Aug 200121 Oct 20107
SAP/BT Quin, Downstream Swine Lairs13 Jun 200621 Oct 20102
Temporal Coarse, Middleton One Row23 Aug 200114 Oct 20108
SAP/BT Quin, River Tees Blackwell14 Oct 201014 Oct 20101
Temporal Coarse, Broken Scar21 Aug 20027 Sept 20108
SAP/BT Quin, Spa Beck, Spa Cottage29 Sept 20086 Sept 20102
SAP/BT Quin, Langley Beck, Selaby Ford14 Nov 19956 Sept 20102
SAP/BT Quin, Ornella Farm 217 Oct 200629 Sept 20082
SAP/BT Quin, Spa Beck, Old Spa Farm22 Sept 200822 Sept 20081
BT Sentinel, River Balder, Balderhead22 Sept 200822 Sept 20081
SAP/BT Annual, High Coniscliffe15 Sept 199516 Oct 20069
Spatial Coarse, U/s Broken Scar25 Sept 200625 Sept 20061
Spatial Coarse, Sockburn25 Sept 200625 Sept 20061
Spatial Coarse, Girsby25 Sept 200625 Sept 20061
SAP/BT Quin, Low Coniscliffe25 Sept 200625 Sept 20061
SAP/BT Quin, Girsby25 Sept 200625 Sept 20061
Croft - Fry Survey26 Sept 19945 Sept 20063
Spatial Coarse, Barnard Castle14 Jun 200614 Jun 20061
SAP/BT Quin, Wycliffe15 Sept 199513 Jun 20066
Temporal Coarse, Winston15 Sept 19955 Oct 20056
Temporal Coarse, Clow Beck - Monk End Farm9 Aug 200118 Aug 20054
Low Moor - Fry Survey22 Sept 19998 Oct 20033
SAP/BT Quin, Gainford18 Sept 200318 Sept 20031
Spatial Coarse, Blackwell Pumping Station10 Aug 200017 Sept 20034
Temporal Coarse, Langley Beck19 Aug 200222 Aug 20032
Spatial Coarse, Kent Beck, Neasham17 Jun 200217 Jun 20021
Spatial Coarse, Mill House, Piercebridge17 Oct 200117 Oct 20011
Temporal Coarse, High Coniscliffe13 Sept 200113 Sept 20011
WR Monitoring Blackwell Pumping Station u/s10 Aug 200010 Aug 20001
SAP/BT Quin, River Balder, Cotherstone Mill1 Nov 19991 Nov 19991
WR Monitoring Egglestone Bridge18 Sept 199521 Oct 19994
SAP/BT Quin, Sudburn Beck, Bow Bridge14 Nov 199514 Nov 19951
Low Worsall Fish Haven - Fry Survey26 Sept 199426 Sept 19941

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

1994–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 68 measured fish were spread across different length ranges.

Smallest
3.4 cm
Lower quarter
6.2 cm
Median
7.6 cm
Upper quarter
8.4 cm
Largest
11.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Tees

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

Brown / sea trout Bullhead Minnow European eel Atlantic salmon Dace

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 →