Wels catfish
Silurus glanis
- Tank length
- 1000 cmabout 33 ft (394 in)
- Start with
- 1
- Temperature
- 4–20 °C39–68 °F
- pH
- 6–8
- Adult size
- 150 cmabout 5 ft (59 in)
- Lifespan
- 30–60 yrs
One of the largest freshwater fish; it is not a home-aquarium species and needs a huge pond.One of the largest freshwater fish; it is not a home-aquarium species and needs a huge pond.
Tank sizes
Good tankmates
Avoid with
- Acei cichlid
No shared temperature rangeNo shared temperature range
- African butterfly cichlid
No shared temperature rangeNo shared temperature range
- African clawed frog
Wels catfish may eat African clawed frogWels catfish may eat African clawed frog
- Agassiz's cory
No shared temperature rangeNo shared temperature range
- Ajamaru rainbowfish
No shared temperature rangeNo shared temperature range
Amano shrimpWels catfish may eat Amano shrimpWels catfish may eat Amano shrimp
- American flagfish
Wels catfish may eat American flagfishWels catfish may eat American flagfish
- Angfa rainbowfish
No shared temperature rangeNo shared temperature range
- Arfak rainbowfish
No shared temperature rangeNo shared temperature range
Assassin snailWels catfish may eat Assassin snailWels catfish may eat Assassin snail
- Banded gourami
No shared temperature rangeNo shared temperature range
- Bandit cory
No shared temperature rangeNo shared temperature range
Data used by the planner
| Temperature | 4–20 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
|---|---|---|
| pH | 6–8 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 1–20 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Origin | Central and eastern Europe to western Asia | curated-v0 (needs expert review) · low confidence |
| Beginner friendly | No | curated-v0 (needs expert review) · medium confidence |
| Care level | advanced | curated-v0 (needs expert review) · medium confidence |
| Activity | moderate | curated-v0 (needs expert review) · medium confidence |
| Swimming level | bottom | curated-v0 (needs expert review) · medium confidence |
| Temperament | predatory | curated-v0 (needs expert review) · medium confidence |
| Nips fins | No | curated-v0 (needs expert review) · medium confidence |
| Long fins | No | curated-v0 (needs expert review) · medium confidence |
| Territorial | No | curated-v0 (needs expert review) · medium confidence |
| Lives in groups | No | curated-v0 (needs expert review) · medium confidence |
| Minimum group | 1 | curated-v0 (needs expert review) · medium confidence |
| Diet | carnivore | curated-v0 (needs expert review) · medium confidence |
| Lifespan (years) | 30–60 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 60 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | No | curated-v0 (needs expert review) · medium confidence |
| Minimum tank length | 1000 | curated-v0 (needs expert review) · medium confidence |