Classification / Names
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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Megalamphodinae
Etymology: Petitella: French, petit = small, diminituve (Ref. 45335).
Eponymy: Professor Georges Jean-Jacques Petit (1892–1973) was a French marine biologist at the Muséum National d’Histoire Naturelle. [...] Heiko Bleher (d: 1944) is a German explorer and ornamental fish wholesaler and supplier. [...] (Ref. 128868), visit book page.
More on authors: Géry & Mahnert.
Issue
Ornamental fish.
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
; sötvatten bentopelagisk; pH range: 5.0 - 6.0; dH range: 5 - 12. Tropical; 23°C - 26°C (Ref. 1672)
South America: Negro and Meta River basins.
Size / Vikt / Age
Könsmognad: Lm ? range ? - ? cm
Max length : 3.6 cm SL hane/ej könsbestämd; (Ref. 38376)
Short description
Bestämningsnycklar | Morfologi | Morfometri
This species is distinguished from its congeners by the following characters: head with a much more intense and widespread red color, extending up to the humeral region (vs. limited red coloration and not extending to humeral region in georgiae, rhodostoma); horizontal black bar on the end of the caudal peduncle is never prolonged forward (vs. prolonged up to the anal-fin in georgiae, rhodostoma); anal-fin hyaline (vs. a black bar present on the base of the anterior part of the anal-fin, continuing obliquely on the branched rays in georgiae, rhodostoma) (Ref. 127081).
Cross section: compressed.
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Bittencourt, P.S., V.N. Machado, B.g. Marshall, T. Hrbek and I.P. Farias, 2020. Phylogenetic relationships of the neon tetras Paracheirodon spp. (Characiformes: Characidae: Stethaprioninae), including comments on Petitella georgiae and Hemigrammus bleheri. Neotropical Ichthyology 18(2):1-11. (Ref. 127081)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Fiskeri: kommersiell; Akvarium: Kommersiell
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00540 - 0.02440), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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