Redmouth Pencilfish
Nannostomus nigrotaeniatus
Redmouth Pencilfish is a peaceful middle swimmer.
Save this fish or add it directly to one of your aquariums.
Quick facts
- Adult size
- ≤ 4 cm (≤ 1.6 in)
- Care level
- Beginner – Intermediate
- Temperament
- Peaceful
- Swimming zone
- Middle swimmer
- Temperature
- 23–27 °C
- pH
- 5.5–7
- GH
- 2–10 dGH
- Diet
- Omnivore
- Lifespan
- up to 5 years
Care requirements
Care level: Beginner – Intermediate.
Lifespan: up to 5 years.
Water parameters
Suitable water: temperature 23–27 °C, pH 5.5–7, GH 2–10 dGH.
Temperament and compatibility
Redmouth Pencilfish is peaceful and suits calm community fish.
Swimming zone and behavior
This fish uses the middle part of the aquarium, so leave enough open swimming space for movement and feeding.
Feeding
As an omnivore, Redmouth Pencilfish should receive a varied diet rather than one repeated food type.
Natural habitat and origin
Origin: Venezuela.
Before adding this fish
- Avoid aggressive or highly competitive fish.
- Offer a varied diet that matches this species.
Similar fish profiles
Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.
FAQ
How large does Redmouth Pencilfish get?
Redmouth Pencilfish reaches ≤ 4 cm (≤ 1.6 in).
Is Redmouth Pencilfish peaceful?
Yes. Redmouth Pencilfish is recorded as peaceful and is best planned with calm community fish that do not harass it or dominate the feeding area.
What temperature is suitable for Redmouth Pencilfish?
Keep it between 23 to 27 °C.