Rhomb barb
Puntius rhomboocellatus
moderatepeacefulmiddle swimmerCyprinidae
- Tank length
- 20 cm8 in
- Group
- 6+
- Temperature
- 23–28 °C73–82 °F
- pH
- 6.6–7.4
- Adult size
- 5 cm2 in
- Lifespan
- 4–6 yrs
A peaceful barb from soft, acidic blackwater; colours are best in a dim, planted tank with tannins and a group of 8+.A peaceful barb from soft, acidic blackwater; colours are best in a dim, planted tank with tannins and a group of 8+.
Tank sizes
Good tankmates
Avoid with
- Acei cichlid
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
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
- Similis shell dweller
No shared pH rangeNo shared pH range
- Afra 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 | 6.6–7.4 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 5–20 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Origin | Borneo (Kalimantan peat swamps) | 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 | 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 |