Edit Nannostomus digrammus
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Name
Scientific name
Nannostomus digrammus
Described by
Authority Fowler, Year 1913, Bracketed
Family
Lebiasinidae
Common names
Twostripe Pencilfish
Photograph credits
All 5 credited
Summary
The twostripe pencilfish, Nannostomus digrammus, is a lebiasinid from the central Amazon basin in Brazil and the Rupununi basin in Guyana. …
Size and aquarium
Maximum size
30mm, standard length
Aquarium size
Minimum length 45 cm, Minimum depth 30 cm, Water movement Low: still or sluggish water
Water
Water conditions
Temperature 22–28°C, pH 5–7
Hardness
1–10dGH
Conductivity
Not recorded
Behaviour
Temperament
Peaceful
Social needs
A shoal or group
Community suitability
Not for a community
Where it lives
Countries, regions, rivers and lakes
Brazil, Guyana, Amazon, Branco, Madeira, Rupununi, Takutu, Tapajós, Trombetas
Writing
Etymology
Nannostomus: from the Latin nannus, meaning 'small', and Greek stoma, meaning 'mouth', in reference to the small mouthparts of member species.
Distribution
Native to the central Amazon basin with records existing from the Madeira, Branco, Trombetas, and Tapajós river drainages, plus the Rupununi basin in Guyana. A…
Habitat
Inhabits sluggish tributaries, small rivers and swampy areas, particularly in areas with dense growth of aquatic vegetation or submerged woody structures and l…
Aquarium size
Base dimensions of at least 45 ∗ 30 cm or equivalent are required.
Maintenance
Should ideally be kept in a heavily-planted set-up, preferably with a dark substrate. The broken lines of sight that exist in such a display allow it to displa…
Water conditions
Not written yet
Diet
A micropredator feeding on tiny invertebrates and other zooplankton in nature. In the aquarium it will accept dried foods of a suitable size but should also be…
Behaviour and compatibility
Very peaceful but does not make an ideal community fish due to its small size and rather timid nature. In a community it's best kept with similarly-sized, peac…
Sexual dimorphism
Adult males possess a highly-modified, extended anal-fin, are more intensely-coloured, and usually slimmer than females.
Reproduction
Unreported.
Notes
This species is rare in the aquarium hobby and it most commonly arrives as bycatch among shipments of other fishes. Among congeners it's most similar to N. bif…
References
References
4 on this profile