Tench · Tinca tinca

Tench in the River Blackwater

Largest measured tench: 27.2 cm

The largest tench measured in Environment Agency surveys of the River Blackwater was 27.2 cm, recorded at Hawley Meadows on 11 April 2019.

Across 97 measured tench, the median measured length was 11 cm.

Surveyors recorded one individual weight: 8.4 oz (0.239 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 Blackwater.

See tench records across England →

Most recent observation6 May 2026Coleford Bridge · 2 fish

Largest measured tench: 27.2 cm
Median length: 11 cm
Fish measured: 97
Survey locations: 9

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
27.2 cm	11 Apr 2019	Hawley Meadows	154398
22.5 cm	10 Apr 2025	Hawley Meadows	176270
22.4 cm	1 Nov 2001	Hawley Meadows	74550
21.5 cm	2 Apr 2012	Hawley Meadows	131024
20.4 cm	11 Apr 2007	Eversley Cross	105034
19 cm	19 Apr 2022	Hawley Meadows	160913
18.8 cm	1 Apr 2003	Eversley Cross	75788
18.4 cm	25 Apr 2013	Coleford Bridge	135909
18.2 cm	23 Apr 2008	Hawley Meadows	110838
18.1 cm	7 Apr 2004	Hawley Meadows	79771

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
Coleford Bridge	21 Mar 2003	6 May 2026	5
Hawley Meadows	1 Nov 2001	10 Apr 2025	8
Manor Farm Nature reserve	8 Apr 2025	8 Apr 2025	1
Eversley Cross	7 Dec 1990	10 Apr 2013	8
Riseley	23 Apr 2007	23 Apr 2007	1
Downstream Riseley	5 Feb 1991	5 Feb 1991	1
Upstream A325 Frimley	30 Nov 1990	30 Nov 1990	1
Downstream Coleford bridge	29 Nov 1990	29 Nov 1990	1
Grove Farm	23 Nov 1990	23 Nov 1990	1

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

1990–2026

Survey records by year

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

490

191

092

093

094

095

096

097

098

099

000

101

002

203

204

105

106

207

108

009

210

011

112

313

014

015

116

017

018

119

020

021

122

023

024

225

126

Fish measured by surveyors

Measured length distribution

See how the 97 measured fish were spread across different length ranges.

Smallest: 4 cm
Lower quarter: 7.8 cm
Median: 11 cm
Upper quarter: 14.3 cm
Largest: 27.2 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

One individual weight was recorded for this fish and river. This is a subset of the measured fish and may not represent the whole population.

Recorded weight: 8.4 oz (0.239 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 Blackwater

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

Roach Chub Gudgeon Pike Dace Perch

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 →