Threadfin acara
Acarichthys heckelii
moderatesemi aggressivebottom swimmerCichlidae
- Tank length
- 150 cmabout 5 ft (59 in)
- Start with
- 1
- Temperature
- 23–28 °C73–82 °F
- pH
- 6.8–7.2
- Adult size
- 10.8 cm4.3 in
- Lifespan
- 8–12 yrs
Pairs dig deep breeding caves in sand and defend a wide area, so plan rocks and open sand rather than a planted layout.Pairs dig deep breeding caves in sand and defend a wide area, so plan rocks and open sand rather than a planted layout.
Tank sizes
Good tankmates
None recorded.
Avoid with
- Acei cichlid
No shared pH rangeNo shared pH range
- Blue rainbowfish
No shared pH rangeNo shared pH range
- Brevis shell dweller
No shared pH rangeNo shared pH range
- Brilliant rasbora
No shared pH rangeNo shared pH range
- Caudopunctatus
No shared pH rangeNo shared pH range
- Irian Jaya rainbowfish
No shared pH rangeNo shared pH range
Lambchop rasboraNo shared pH rangeNo shared pH range
- Multies
No shared pH rangeNo shared pH range
- Parkinson's rainbowfish
No shared pH rangeNo shared pH range
- Pindani
No shared pH rangeNo shared pH range
- Rusty cichlid
No shared pH rangeNo shared pH range
- Saulosi cichlid
No shared pH rangeNo shared pH range
Data used by the planner
| Temperature | 23–28 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
|---|---|---|
| pH | 6.8–7.2 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 5–15 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Origin | Amazon basin and Guianas | curated-v0 (needs expert review) · low confidence |
| Beginner friendly | No | curated-v0 (needs expert review) · medium confidence |
| Care level | moderate | 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 | semi aggressive | 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 | Yes | 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 | omnivore | curated-v0 (needs expert review) · medium confidence |
| Lifespan (years) | 8–12 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 18 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | No | curated-v0 (needs expert review) · medium confidence |
| Minimum tank length | 150 | curated-v0 (needs expert review) · medium confidence |