River Tas
19 fish species have been recorded at 11 locations along the River Tas.
- Fish species
- 19
- Places surveyed
- 11
- Survey visits
- 90
- Records span
- 1987–2026
Local EA evidence
Where fish were recorded
Choose a point on the map to see what was recorded there.
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River conditions
Environment Agency evidence
Fish found in this river
Open a linked fish for detailed measurements, or use the map filter above to compare survey locations.
| Fish | Sites | Most recent | Fish counted | Measured length | Measured weight |
|---|---|---|---|---|---|
| European eelAnguilla anguilla | 11 | 2026 | 3,317 | Median: 31.6 cm519 fish measuredLargest measured european eel: 62 cm | Median: 2.1 oz (0.06 kg)281 fish weighedLargest measured: 15.9 oz (0.45 kg) |
| Stone loachBarbatula barbatula | 11 | 2024 | 1,925 | Median: 7.7 cm1,578 fish measuredLargest measured stone loach: 12.1 cm | Median: 0.2 oz (0.007 kg)12 fish weighedLargest measured: 0.3 oz (0.009 kg) |
| RoachRutilus rutilus | 11 | 2016 | 1,580 | Median: 13.4 cm1,580 fish measuredLargest measured roach: 35.1 cm | — |
| BullheadCottus gobio | 10 | 2026 | 3,991 | Median: 5.8 cm3,017 fish measuredLargest measured bullhead: 10.9 cm | Median: 0.3 oz (0.0075 kg)2 fish weighedLargest measured: 0.3 oz (0.008 kg) |
| DaceLeuciscus leuciscus | 10 | 2022 | 1,979 | Median: 14.8 cm1,914 fish measuredLargest measured dace: 28.2 cm | — |
| PikeEsox lucius | 10 | 2024 | 271 | Median: 25.8 cm271 fish measuredLargest measured pike: 102.5 cm | — |
| GudgeonGobio gobio | 10 | 2024 | 801 | Median: 7.9 cm801 fish measuredLargest measured gudgeon: 18.5 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 9 | 2026 | 1,777 | Median: 4 cm1,577 fish measuredLargest measured 3-spined stickleback: 12.8 cm | — |
| PerchPerca fluviatilis | 9 | 2005 | 85 | Median: 17.1 cm85 fish measuredLargest measured perch: 28.8 cm | — |
| Brown / sea troutSalmo trutta | 6 | 2026 | 844 | Median: 15.6 cm835 fish measuredLargest measured brown / sea trout: 57 cm | Median: 1.3 oz (0.037 kg)55 fish weighedLargest measured: 8.1 oz (0.23 kg) |
| 10-spined sticklebackPungitius pungitius | 6 | 2026 | 32 | Median: 4.5 cm32 fish measuredLargest measured 10-spined stickleback: 5.5 cm | — |
| RuddScardinius erythrophthalmus | 5 | 2013 | 14 | Median: 15 cm14 fish measuredLargest measured rudd: 24.1 cm | — |
| MinnowPhoxinus phoxinus | 4 | 2024 | 5,110 | Median: 5.1 cm1,994 fish measuredLargest measured minnow: 9 cm | — |
| ChubLeuciscus cephalus | 4 | 2024 | 84 | Median: 24.4 cm84 fish measuredLargest measured chub: 53 cm | — |
| Brook lampreyLampetra planeri | 4 | 2024 | 71 | Median: 12.1 cm70 fish measuredLargest measured brook lamprey: 19 cm | Median: 0.1 oz (0.002 kg)28 fish weighedLargest measured: 0.5 oz (0.015 kg) |
| RuffeGymnocephalus cernuus | 3 | 2005 | 17 | Median: 11.4 cm17 fish measuredLargest measured ruffe: 16 cm | — |
| Common breamAbramis brama | 1 | 1992 | 2 | Median: 50.8 cm2 fish measuredLargest measured common bream: 51 cm | — |
| TenchTinca tinca | 1 | 1996 | 2 | Median: 21.7 cm2 fish measuredLargest measured tench: 22.5 cm | — |
| River lampreyLampetra fluviatilis | 1 | 2005 | 1 | Recorded length: 32 cm1 fish measured | Recorded weight: 2.5 oz (0.07 kg)1 fish weighed |
EA surveys have recorded these fish at particular sites and times. Absence from a survey is not evidence that a species is absent from the river. Every valid individual length and weight is retained, with its sample size shown.
Useful context
This page follows survey locations along the main River Tas. Tributaries and unrelated rivers with similar names are kept separate.
The map shows past fish records, not fishing access or a promise of what you’ll catch today.
How RiverFish handles the data →