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Teleostei (teleosts) > Characiformes (Characins) > Characidae (Characins; tetras) > Stethaprioninae
Etymology: Hemigrammus: Greek, hemi = half + Greek, gramma = letter, signal (Ref. 45335); neptunus: Named after the god Neptune; noun in apposition.
Eponymy: Neptune was the Roman god of the sea. He is often depicted holding a trident, and the name was inspired by the trident-like mark on the tetra’s caudal fin. (Ref. 128868), visit book page.
More on authors: Zarske & Géry.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic; pH range: 5.9 - ?. Tropical; 11°S - 12°S

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

South America: Amazon River basin in Bolivia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.2 cm SL male/unsexed; (Ref. 48393)

Known from black-water rivers, but may also occur elsewhere.

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

Main reference Upload your references | References | Coordinator | Collaborators

Zarske, A. and J. Géry, 2002. Hemigrammus neptunus sp.n. - eine neue Salmler-Art (Teleostei, Characiformes, Characidae) aus dem Einzugsgebiet des Río Manuripi in Bolivien (Departamento Pando). Zoologische Abhandlungen 52:23-34. (Ref. 48393)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Least Concern (LC) ; Date assessed: 31 October 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
Ecology

Population dynamics
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Max. ages / sizes
Length-weight rel.
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Length-frequencies
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Life cycle
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Eggs
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Anatomy
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01202 (0.00496 - 0.02912), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.0 ±0.4 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Hemigrammus neptunus Zarske & Géry, 2002