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Nannostomus beckfordi  Günther, 1872

Golden pencilfish
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Native range | All suitable habitat
This map was computer-generated and has not yet been reviewed.
Nannostomus beckfordi   AquaMaps   Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Lebiasinidae (Pencilfishes) > Pyrrhulininae
Etymology: Nannostomus: Latin, nannus = small + Greek, stoma = mouth (Ref. 45335).   More on author: Günther.

Environment / Climate / Range Ecology

Freshwater; benthopelagic; pH range: 6.0 - 8.0; dH range: 5 - 19.   Tropical; 24°C - 26°C (Ref. 1672)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: native in the rivers of Guyana south to the Amazon basin and up the Amazon River to the Negro River.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 6.5 cm SL male/unsexed; (Ref. 7020)

Biology     Glossary (e.g. epibenthic)

Inhabits small rivers with little current and in swamps where they are very common. Forms groups where the males dominate to defend their territory. Is highly appreciated by aquarists (Ref. 12225). Feeds on worms, crustaceans and insects (Ref. 7020). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51539).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

At spawning time in captivity, male and female swim alongside one another. Several batches of 1 to 5 eggs are laid among the fine-leaved plants, with a total of up to 200 eggs in some cases; eggs hatch in 30 to 40 hours and fry are free-swimming about six days after (Ref. 7020). Between 24°-27°C, eggs hatch in 24 hours (Ref. 205).

Main reference Upload your references | References | Coordinator : Weitzman, Marilyn | Collaborators

Planquette, P., P. Keith and P.-Y. Le Bail, 1996. Atlas des poissons d'eau douce de Guyane. Tome 1. Collection du Patrimoine Naturel Volume 22, MNHN, Paris & INRA, Paris. 429 p. (Ref. 12225)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

Threat to humans

  Harmless




Human uses

Aquaculture: commercial; aquarium: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

More information

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Ecology
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Fecundity
Eggs
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Larvae
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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Public aquariums | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00177 - 0.01234), b=3.14 (2.91 - 3.37), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.3   ±0.39 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 200).
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .