Amazon leaffish
Monocirrhus polyacanthus
- Tank length
- 24 cm9 in
- Start with
- 1
- Temperature
- 22–26 °C72–79 °F
- pH
- 5–6.5
- Adult size
- 8 cm3 in
- Lifespan
- 5–8 yrs
An ambush predator that eats fish up to about half its length and usually needs live food; house it only with larger calm fish or alone.An ambush predator that eats fish up to about half its length and usually needs live food; house it only with larger calm fish or alone.
Tank sizes
Good tankmates
Avoid with
- Acei cichlid
No shared water hardness rangeNo shared water hardness range
- Ajamaru rainbowfish
No shared pH rangeNo shared pH range
- Angfa rainbowfish
No shared pH rangeNo shared pH range
- Arfak rainbowfish
No shared pH rangeNo shared pH range
Assassin snailNo shared water hardness rangeNo shared water hardness range
- Batanta rainbowfish
No shared pH rangeNo shared pH range
- Blue rainbowfish
No shared pH rangeNo shared pH range
- Brevis shell dweller
No shared water hardness rangeNo shared water hardness range
- Butterfly splitfin
No shared pH rangeNo shared pH range
- Caudopunctatus
No shared water hardness rangeNo shared water hardness range
Celestial pearl danioAmazon leaffish may eat Celestial pearl danioAmazon leaffish may eat Celestial pearl danio
Cherry shrimpAmazon leaffish may eat Cherry shrimpAmazon leaffish may eat Cherry shrimp
Data used by the planner
| Temperature | 22–26 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
|---|---|---|
| pH | 5–6.5 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 1–8 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low confidence |
| Origin | Amazon basin (Brazil, Peru, Bolivia, Colombia) | 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 | sedentary | curated-v0 (needs expert review) · medium confidence |
| Swimming level | middle | 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) | 5–8 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 12 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | Yes | curated-v0 (needs expert review) · medium confidence |