Classification / Names
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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
Ecologia
; acqua dolce benthopelagico; pH range: 5.9 - ?. Tropical; 11°S - 12°S
South America: Amazon River basin in Bolivia.
Size / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.2 cm SL maschio/sesso non determinato; (Ref. 48393)
Known from black-water rivers, but may also occur elsewhere.
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
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 2024-1)
Threat to humans
Harmless
Human uses
Pesca: di nessun interesse
Strumenti
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).