Tench · Tinca tinca

Tench in the River Thames

Largest measured tench: 59.9 cm

The largest tench measured in Environment Agency surveys of the River Thames was 59.9 cm, recorded at Caversham-sonning - (Margin) on 19 July 2004.

Across 632 measured tench, the median measured length was 38.3 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 Thames.

See tench records across England →

Most recent observation16 October 2025Hannington Bridge · 1 fish

Largest measured tench: 59.9 cm
Median length: 38.3 cm
Fish measured: 632
Survey locations: 46

Individual EA measurements

Largest measured tench

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
59.9 cm	19 Jul 2004	Caversham-sonning - (Margin)	80526
55.2 cm	23 Jul 2008	Caversham-sonning - (Margin)	112155
54.7 cm	16 Jul 2009	Caversham-sonning - (Margin)	118123
54.4 cm	21 Jul 2006	Caversham (Weirpool)	100843
54.2 cm	19 Jul 2010	Goring to Whitchurch (Margin)	123130
54.2 cm	24 Jul 2002	Shiplake-Marsh - (Mid-River)	67520
53.5 cm	20 Jul 2011	Goring to Whitchurch (Margin)	127654
53 cm	15 Aug 2007	Caversham-sonning - (Margin)	106497
53 cm	6 Jul 2001	Abingdon - Culham (Margin)	82781
52.2 cm	20 Jul 2010	Whitchurch to Mapledurham (Margin)	123118

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where tench were found

Each point marks a survey location with at least one tench 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 tench
Hannington Bridge	16 Oct 2025	16 Oct 2025	1
Eynsham- kings	14 Jun 2001	26 Sept 2025	4
Roundhouse to St Johns(margins)	8 Oct 2004	22 Sept 2025	12
Hambleden - Hurley (margin)	24 Jul 2001	25 Jul 2025	12
Shiplake-marsh - (Margin)	24 Jul 2002	24 Jul 2025	12
Caversham-sonning - (Margin)	17 Jul 2001	23 Jul 2025	10
Whitchurch to Mapledurham (Margin)	16 Jul 2003	22 Jul 2025	7
Days - Benson (Margin)	24 Sept 1993	20 Jul 2025	21
Clifton Hampden - Days (Margin)	23 Sept 1993	19 Jul 2025	15
Sandford - Abingdon - (Margin)	20 Sept 1993	10 Jul 2025	21
Godstow to Osney	1 Oct 2003	20 Sept 2024	8
Culham Weirpool	17 Jul 2015	12 Jul 2024	5
Culham - Clifton Hampden (Margin)	3 Jul 1996	12 Jul 2024	17
Abingdon - Culham (Margin)	21 Sept 1993	11 Jul 2024	21
Iffley - Sandford (Margin)	11 Jul 1999	9 Jul 2024	14
Northmoor- Pinkhill	26 Sept 2003	27 Sept 2023	8
Rushey to Shifford	25 Sept 2003	26 Sept 2023	7
Buscot to Grafton	5 Jun 2001	4 Oct 2022	11
Cleeve-Goring - (Margin)	15 Jul 2004	23 Jul 2022	6
Hambleden - Hurley (Weirpool)	23 Jul 2003	29 Jul 2019	2
Castle Eaton	11 Oct 2016	11 Oct 2016	1
Godstow Weirpool	5 Oct 2015	3 Oct 2016	2
Clifton Weir Stream	5 Jul 2013	6 Jul 2016	3
Sonning Weir	23 Jul 2011	23 Jul 2011	1
Goring to Whitchurch (Margin)	19 Jul 2010	20 Jul 2011	2
Abingdon Weirpool	15 Jul 2011	15 Jul 2011	1
Buscot weir pool	6 Oct 2006	5 Oct 2010	3
Sonning - shiplake (Margin)	22 Jul 2010	22 Jul 2010	1
Whitchurch (Weirpool)	20 Jul 2006	21 Jul 2008	2
Shifford to Newbridge - Windrush Confluence	23 Oct 2007	23 Oct 2007	1
Newbridge - Windrush Confluence - to Northmoor	23 Oct 2007	23 Oct 2007	1
Eynsham Weir Stream	17 Mar 2006	7 Sept 2007	3
Port Meadow	1 Sept 2007	1 Sept 2007	1
St Patricks stream	16 Nov 2006	16 Nov 2006	1
Caversham (Weirpool)	21 Jul 2006	21 Jul 2006	1
Days - Benson (Middle)	24 Sept 1993	9 Jul 2005	8
Clifton Hampden - Days (Middle)	4 Jul 1996	8 Jul 2005	3
Abingdon - Culham (Middle)	6 Jul 1994	6 Jul 2005	7
Iffley - Sandford (Middle)	11 Jul 1999	4 Jul 2005	6
Sandford - Abingdon - Middle	20 Sept 1993	6 Jul 2004	6
Hailstone farm	18 Mar 2004	18 Mar 2004	1
Shiplake - Marsh (Weirpool)	22 Jul 2003	22 Jul 2003	1
Shiplake-Marsh - (Mid-River)	24 Jul 2002	24 Jul 2002	1
Caversham-sonning - (Mid River)	23 Jul 2002	23 Jul 2002	1
Hambleden - Hurley (middle)	24 Jul 2001	24 Jul 2001	1
Culham - Clifton Hampden (Middle)	7 Jul 1998	7 Jul 1998	1

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

1993–2025

Survey records by year

Each bar shows how many survey visits recorded tench that year.

693

594

095

796

497

898

999

700

1101

1502

1703

1904

1505

1606

1607

708

709

1110

911

412

613

414

815

1216

617

318

719

020

021

1222

623

724

1025

Fish measured by surveyors

Measured length distribution

See how the 632 measured fish were spread across different length ranges.

Smallest: 5.6 cm
Lower quarter: 24.2 cm
Median: 38.3 cm
Upper quarter: 43.8 cm
Largest: 59.9 cm

0–99 mm

100–199 mm

102

200–299 mm

300–399 mm

138

400–499 mm

264

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Thames

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

Roach Bleak Pike Chub Perch 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 →