>
Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
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. [...] Georgette Géry was the wife of the author Dr Jacques Géry (1917–2007) (q.v.). Although the original text was silent, the author later revealed that this was the lady honoured. (Also see Georgia) (Ref. 128868), visit book page.
More on authors: Géry & Boutière.
Issue
See Géry & Mahnert (1986) for remarks on taxonomy and distribution.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce pelagico; pH range: 5.5 - 7.0; dH range: ? - 12. Tropical; 22°C - 26°C (Ref. 1672)
South America: upper Amazon River basin in Peru; Purus, Negro, and Madeira River basins.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.9 cm SL maschio/sesso non determinato; (Ref. 38376)
Short description
Chiavi di identificazione | Morfologia | Morfometria
This species is distinguished from its congeners by the following characters: maxillary long and wide (vs. very short and round in bleheri and short in rhodostoma); premaxillary teeth in a single row (vs. two in bleheri, rhodostoma); dentary with 9-11 teeth with 5 cuspids (vs. 6, with 6-7 cuspids, followed by 1 or 2 tricuspidate ones in bleheri, and 5-6 with 5 cuspids, usually followed by 4 conical teeth in rhodostoma); black spot on lower posterior border of caudal peduncle absent (vs. present in bleheri, rhodostoma) (Ref. 127081)
Feeds on worms, small crustaceans and plant matter (Ref. 7020). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 80 cm (Ref. 51539).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Lima, F.C.T., L.R. Malabarba, P.A. Buckup, J.F. Pezzi da Silva, R.P. Vari, A. Harold, R. Benine, O.T. Oyakawa, C.S. Pavanelli, N.A. Menezes, C.A.S. Lucena, M.C.S.L. Malabarba, Z.M.S. Lucena, R.E. Reis, F. Langeani, C. Moreira et al. …, 2003. Genera Incertae Sedis in Characidae. p. 106-168. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 38376)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Pesca: elevato interesse commerciale; Acquario: elevato interesse commerciale
Strumenti
Special reports
Download XML
Fonti Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [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).
Trophic level (Ref.
69278): 3.0 ±0.32 se; based on food items.
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).
