Blub
- #1
Dwarf Pencilfish
(Nannostomus marginatus)
Common names: Dwarf pencilfish.
Size: 3.5-5cm
pH: 5.5-7.0
Tempº: 24ºC - 28ºC
Tank region: Middle -Top layer
Origin: Suriname, Brazil, Peru, Guyana, Columbia.
Gender: Adult males show more red on their fins than females, and are slimmer.
Notes: This small pencilfish needs to be kept in schools of 6 or more. They are fairly timid, and should not be kept with overly boisterous tank mates or fish much bigger than them so they don’t get outcompeted for food.
A low light planted tank is ideal for this species, as they love plants in and do best in shady conditions. It is a good idea to include floating plants in their tank, as this creates an ideal shady retreat. Feeding these fish should be easy, as they should take most small foods.

(Nannostomus marginatus)
Common names: Dwarf pencilfish.
Size: 3.5-5cm
pH: 5.5-7.0
Tempº: 24ºC - 28ºC
Tank region: Middle -Top layer
Origin: Suriname, Brazil, Peru, Guyana, Columbia.
Gender: Adult males show more red on their fins than females, and are slimmer.
Notes: This small pencilfish needs to be kept in schools of 6 or more. They are fairly timid, and should not be kept with overly boisterous tank mates or fish much bigger than them so they don’t get outcompeted for food.
A low light planted tank is ideal for this species, as they love plants in and do best in shady conditions. It is a good idea to include floating plants in their tank, as this creates an ideal shady retreat. Feeding these fish should be easy, as they should take most small foods.
