Red Arc Pencilfish
Red Arc Pencilfish is a peaceful freshwater fish that needs a tank of at least 15 gallons (57 L), water at 75-82°F (24-28°C) and a pH of 5-7.
Also searched as: red arc pencil, nannostomus rubrocaudatus
Quick facts
Red markings. Surface dweller. Peaceful community fish.
| Minimum tank | 15 gallons (57 L) |
|---|---|
| Temperature | 75-82°F (24-28°C) |
| pH | 5-7 |
| Temperament | Peaceful |
| Swim level | Top |
| Group size | 6 or more together |
| Tank type | Freshwater |
Good tank mates
Ranked by water overlap and temperament, using the same checks as the MyAquaLog compatibility tool.
- Kuhli Loachmin tank 15 gal
Temperature overlap 75-82°F, pH overlap 5.5-7. Both species are peaceful.
- Rummy Nose Tetramin tank 10 gal
Temperature overlap 75-81°F, pH overlap 6-7. Both species are peaceful.
- Coral Red Pencilfishmin tank 15 gal
Temperature overlap 75-82°F, pH overlap 5-7. Both species are peaceful.
- Marbled Hatchetfishmin tank 20 gal
Temperature overlap 75-82°F, pH overlap 5-7. Both species are peaceful.
- Splash Tetramin tank 20 gal
Temperature overlap 75-82°F, pH overlap 6-7. Both species are peaceful.
- Dwarf Pencilfishmin tank 10 gal
Temperature overlap 75-82°F, pH overlap 5.5-7. Both species are peaceful.
- Ember Tetramin tank 10 gal
Temperature overlap 75-82°F, pH overlap 5.5-7. Both species are peaceful.
- Green Neon Tetramin tank 10 gal
Temperature overlap 75-82°F, pH overlap 5-6.5. Both species are peaceful.
Avoid with
Pairings that fail the temperament, water-overlap or known-conflict checks.
- African Cichlids (Mbuna)min tank 55 gal
Aggressive species will harass or eat peaceful fish; no pH overlap (5-7 vs 7.8-8.6).
- Tropheusmin tank 75 gal
Aggressive species will harass or eat peaceful fish; no pH overlap (5-7 vs 8-9).
Aggressive species will harass or eat peaceful fish.
Oscar Fishmin tank 55 galBlue Crayfishmin tank 20 galParadise Fishmin tank 20 gal
Check your own tank
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