Blackline rasbora
Rasbora borapetensis
easypeacefulmiddle swimmerCyprinidae
- Tank length
- 30 cm12 in
- Group
- 8+
- Temperature
- 23–25 °C73–77 °F
- pH
- 5.5–7.5
- Adult size
- 5 cm2 in
- Lifespan
- 3–5 yrs
A hardy, active shoaler for community tanks; keep a group of 8+ with open swimming room.A hardy, active shoaler for community tanks; keep a group of 8+ with open swimming room.
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
- Caudopunctatus
No shared pH rangeNo shared pH range
- Irian Jaya rainbowfish
No shared temperature rangeNo shared temperature range
- Multies
No shared pH rangeNo shared pH range
- Parkinson's rainbowfish
No shared temperature rangeNo shared temperature 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
- African knifefish
African knifefish may eat Blackline rasboraAfrican knifefish may eat Blackline rasbora
Data used by the planner
| Temperature | 23–25 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
|---|---|---|
| pH | 5.5–7.5 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low confidence |
| Hardness (dGH) | 5–12 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Origin | Thailand, Malay Peninsula and Mekong basin | curated-v0 (needs expert review) · low confidence |
| Beginner friendly | Yes | curated-v0 (needs expert review) · medium confidence |
| Care level | easy | 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 | 8 | curated-v0 (needs expert review) · medium confidence |
| Diet | omnivore | curated-v0 (needs expert review) · medium confidence |
| Lifespan (years) | 3–5 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 6 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | Yes | curated-v0 (needs expert review) · medium confidence |