Crimson-spotted rainbowfish
Melanotaenia duboulayi
- Adult size
- 9 cm4 in
- Group
- 6+
- Tank length
- 100 cmabout 3 ft (39 in)
- Lifespan
- 5–8 yrs
- Temperature
- 16–28 °C61–82 °F
- pH
- 5.4–7.8
- Hardness
- 1–15 dGH
- Diet
- omnivore
Hardy and tolerant of cooler rooms, but it grows larger and swims harder than many buyers expect, so give it length.Hardy and tolerant of cooler rooms, but it grows larger and swims harder than many buyers expect, so give it length.
Tank sizes
Good tankmates
Avoid with
- Alligator gar
Alligator gar may eat Crimson spotted rainbowfishAlligator gar may eat Crimson spotted rainbowfish
- Antenna ray
Antenna ray may eat Crimson spotted rainbowfishAntenna ray may eat Crimson spotted rainbowfish
- Arapaima
Arapaima may eat Crimson spotted rainbowfishArapaima may eat Crimson spotted rainbowfish
- Asian arowana
Asian arowana may eat Crimson spotted rainbowfishAsian arowana may eat Crimson spotted rainbowfish
- Australian pearl arowana
Australian pearl arowana may eat Crimson spotted rainbowfishAustralian pearl arowana may eat Crimson spotted rainbowfish
- Barred bichir
Barred bichir may eat Crimson spotted rainbowfishBarred bichir may eat Crimson spotted rainbowfish
- Brown bullhead
Brown bullhead may eat Crimson spotted rainbowfishBrown bullhead may eat Crimson spotted rainbowfish
- Bullseye snakehead
Bullseye snakehead may eat Crimson spotted rainbowfishBullseye snakehead may eat Crimson spotted rainbowfish
- Butterfly peacock bass
Butterfly peacock bass may eat Crimson spotted rainbowfishButterfly peacock bass may eat Crimson spotted rainbowfish
- Channel catfish
Channel catfish may eat Crimson spotted rainbowfishChannel catfish may eat Crimson spotted rainbowfish
- Clown knifefish
Clown knifefish may eat Crimson spotted rainbowfishClown knifefish may eat Crimson spotted rainbowfish
- Common river stingray
Common river stingray may eat Crimson spotted rainbowfishCommon river stingray may eat Crimson spotted rainbowfish
Sources
| temperature | 16–28 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium |
|---|---|---|
| ph | 5.4–7.8 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium |
| gh | 1–15 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium |
| origin | Coastal rivers of northern New South Wales and southern Queensland, Australia | curated-v0 (needs expert review) · low |
| notes | Hardy and tolerant of cooler rooms, but it grows larger and swims harder than ma | curated-v0 (needs expert review) · medium |
| beginner friendly | true | curated-v0 (needs expert review) · medium |
| care level | easy | curated-v0 (needs expert review) · medium |
| color palette | #9AB8D0, #D93B3B, #E8C840 | curated-v0 (needs expert review) · low |
| activity | active | curated-v0 (needs expert review) · medium |
| swim zone | middle | curated-v0 (needs expert review) · medium |
| temperament | peaceful | curated-v0 (needs expert review) · medium |
| fin nipper | false | curated-v0 (needs expert review) · medium |
| long finned | false | curated-v0 (needs expert review) · medium |
| territorial | false | curated-v0 (needs expert review) · medium |
| schooling | true | curated-v0 (needs expert review) · medium |
| schooling min | 6 | curated-v0 (needs expert review) · medium |
| diet | omnivore | curated-v0 (needs expert review) · medium |
| lifespan years | 5–8 | curated-v0 (needs expert review) · low |
| growth to adult months | 12 | curated-v0 (needs expert review) · low |
| length weight | {"a":0.012,"b":3} | curated-v0 (needs expert review) · low |
| planted safe | true | curated-v0 (needs expert review) · medium |
| min tank length | 100 | curated-v0 (needs expert review) · medium |
| body shape | rainbow | curated-v0 (needs expert review) · medium |