Ornate rainbowfish
Rhadinocentrus ornatus
- Adult size
- 4 cm1 in
- Group
- 6+
- Tank length
- 22 cm9 in
- Lifespan
- 3–5 yrs
- Temperature
- 12–32 °C54–90 °F
- pH
- 3.9–6.8
- Hardness
- 4–8 dGH
- Diet
- omnivore
Prefers soft, acidic, tannin-stained water; keep a group of 6+ with plenty of plants and peaceful small tankmates.Prefers soft, acidic, tannin-stained water; keep a group of 6+ with plenty of plants and peaceful small tankmates.
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
- Chinese mystery snail
No shared pH rangeNo shared pH range
- Corona rainbowfish
No shared pH rangeNo shared pH range
Sources
| temperature | 12–32 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low |
|---|---|---|
| ph | 3.9–6.8 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low |
| gh | 4–8 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium |
| origin | Coastal heath streams of eastern Australia | curated-v0 (needs expert review) · low |
| notes | Prefers soft, acidic, tannin-stained water; keep a group of 6+ with plenty of pl | curated-v0 (needs expert review) · medium |
| beginner friendly | false | curated-v0 (needs expert review) · medium |
| care level | moderate | curated-v0 (needs expert review) · medium |
| color palette | #C8B898, #3A7AC0, #D84A3A | 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 | 3–5 | curated-v0 (needs expert review) · low |
| growth to adult months | 8 | curated-v0 (needs expert review) · low |
| length weight | {"a":0.009,"b":3} | curated-v0 (needs expert review) · low |
| planted safe | true | curated-v0 (needs expert review) · medium |
| body shape | rainbow | curated-v0 (needs expert review) · medium |