Madagascar rainbowfish
Bedotia geayi
- Tank length
- 100 cmabout 3 ft (39 in)
- Group
- 6+
- Temperature
- 20–24 °C68–75 °F
- pH
- 7–8
- Adult size
- 8 cm3 in
- Lifespan
- 4–6 yrs
An active shoaler from cool clear streams; it needs swimming length and good oxygen more than heat.An active shoaler from cool clear streams; it needs swimming length and good oxygen more than heat.
Tank sizes
Good tankmates
Avoid with
- Black kuhli loach
No shared temperature rangeNo shared temperature range
Boeseman rainbowfishNo shared temperature rangeNo shared temperature range
- Brilliant rasbora
No shared pH rangeNo shared pH range
- Irian Jaya rainbowfish
No shared temperature rangeNo shared temperature range
- Julii cory
No shared temperature rangeNo shared temperature range
Lambchop rasboraNo shared pH rangeNo shared pH range
- Parkinson's rainbowfish
No shared temperature rangeNo shared temperature range
- Rusty cichlid
No shared temperature rangeNo shared temperature range
- Afra cichlid
No shared temperature rangeNo shared temperature range
- African pike
No shared temperature rangeNo shared temperature range
- Alligator gar
Alligator gar may eat Madagascar rainbowfishAlligator gar may eat Madagascar rainbowfish
- Altum angelfish
No shared water hardness rangeNo shared water hardness range
Data used by the planner
| Temperature | 20–24 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
|---|---|---|
| pH | 7–8 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 9–19 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
| Origin | Eastern Madagascar streams | 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 | active | curated-v0 (needs expert review) · medium confidence |
| Swimming level | middle | curated-v0 (needs expert review) · medium confidence |
| Temperament | peaceful | 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 | Yes | curated-v0 (needs expert review) · medium confidence |
| Minimum group | 6 | curated-v0 (needs expert review) · medium confidence |
| Diet | omnivore | curated-v0 (needs expert review) · medium confidence |
| Lifespan (years) | 4–6 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 8 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | Yes | curated-v0 (needs expert review) · medium confidence |
| Minimum tank length | 100 | curated-v0 (needs expert review) · medium confidence |