Classification / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Hyphessobrycon: Greek, hyphesson, -on, -on = a little smaller + Greek, bryko = to bite (Ref. 45335); montagi: Named for Luciano F.A. Montag ('Miúdo'), who collected part of the material of the species and in recognition of his contributions to the knowledge of the ichthyofauna from the lower portion of the Amazon basin. A genitive noun.
Eponymy: Dr Luciano Fogaça de Assis Montag (d: 1975) is a Brazilian zoologist who is a Professor at the Federal University of Pará. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
South America: headwaters of the rio Arapiuns (rio Branco and rio Aruã), lower rio
Tapajós basin, and small direct tributary of the Rio Amazonas (igarapé da Ponte) in Pará state, Brazil.
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.1 cm SL αρσενικό/απροσδιόριστο; (Ref. 97524)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Μαλακές ραχιαίες ακτίνες (συνολικά) : 10 - 11; Μαλακές εδρικές ακτίνες: 21 - 25; Σπόνδυλοι: 31 - 34. Hyphessobrycon montagi is distinguished from all its congeners, with exception of H. balbus, H. bifasciatus, H. columbianus, H. condotensis, H. flammeus, H. griemi, H. isiri, H. itaparicensis, H. savagei, H. sebastiani, H. togoi, H. tortuguerae, and H. weitzmanorum, by having two well-defined humeral blotches. It differs from all these species by the having the following characters: a well-defined caudal peduncle blotch (vs. caudal peduncle blotch absent in all aforementioned species, with the exception of H. isiri and H. togoi); a horizontally-elongated oval, very well-defined first humeral blotch (vs. first humeral blotch moderately conspicuous, vertically elongated, and approximately rectangular in shape); and first and second humeral blotches are connected via a narrow, short stripe (vs. humeral blotches not connected) (Ref. 97524).
Found only in clear-water terra firme streams, i.e., streams dissecting the uplands, above the periodically flooded igapó forest, as the Igarapé Socó Barroso, the type locality. These streams have width ranging from 0.80 to 20 m, moderate water current (0.1-0.7 m/s), clear,
sandy bottom with pebbles, mud, leaf litter, and submerged logs, often also presenting aquatic macrophytes, pH ranging from 5.8 to 7.44, and water temperature ranging from 24.9° to 29.1°C. Ripe oocytes were observed in females collected in March and August (Ref. 97524).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Lima, F.C.T., D.P. Coutinho and W.B. Wosiacki, 2014. A new Hyphessobrycon (Ostariophysi: Characiformes: Characidae) from the middle Amazon basin, Brazil. Zootaxa 3872(2):167-179. (Ref. 97524)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
αλιεία: χωρίς ενδιαφέρον
Εργαλεία
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Διαδικτυακές πηγές
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=0.01175 (0.00498 - 0.02769), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 2.9 ±0.3 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref.
120179): Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
