Bucktooth tetra
Exodon paradoxus
- Tank length
- 120 cmabout 4 ft (47 in)
- Group
- 10+
- Temperature
- 22–28 °C72–82 °F
- pH
- 6–7.5
- Adult size
- 12 cm5 in
- Lifespan
- 8–10 yrs
Scale-eater that attacks other fish and each other; keep a large group of 10+ alone in a spacious tank.Scale-eater that attacks other fish and each other; keep a large group of 10+ alone in a spacious tank.
Tank sizes
Good tankmates
Avoid with
- Acei cichlid
No shared pH rangeNo shared pH range
- Blue lyretail
Bucktooth tetra may nip Blue lyretailBucktooth tetra may nip Blue lyretail
- Brevis shell dweller
No shared pH rangeNo shared pH range
- Caudopunctatus
No shared pH rangeNo shared pH range
Congo tetraBucktooth tetra may nip Congo tetraBucktooth tetra may nip Congo tetra
- Featherfin squeaker
Bucktooth tetra may nip Featherfin squeakerBucktooth tetra may nip Featherfin squeaker
- Filament barb
Bucktooth tetra may nip Filament barbBucktooth tetra may nip Filament barb
- Guppy
Bucktooth tetra may nip GuppyBucktooth tetra may nip Guppy
- Multies
No shared pH rangeNo shared pH range
Pearl gouramiBucktooth tetra may nip Pearl gouramiBucktooth tetra may nip Pearl gourami
- Pindani
No shared pH rangeNo shared pH range
- Rusty cichlid
No shared pH rangeNo shared pH range
Data used by the planner
| Temperature | 22–28 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
|---|---|---|
| pH | 6–7.5 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 1–15 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low confidence |
| Origin | Amazon and Tocantins basins, Brazil | 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 | active | curated-v0 (needs expert review) · medium confidence |
| Swimming level | middle | curated-v0 (needs expert review) · medium confidence |
| Temperament | aggressive | curated-v0 (needs expert review) · medium confidence |
| Nips fins | Yes | 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 | Yes | curated-v0 (needs expert review) · medium confidence |
| Minimum group | 10 | curated-v0 (needs expert review) · medium confidence |
| Diet | carnivore | curated-v0 (needs expert review) · medium confidence |
| Lifespan (years) | 8–10 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 10 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | Yes | curated-v0 (needs expert review) · medium confidence |
| Minimum tank length | 120 | curated-v0 (needs expert review) · medium confidence |