Classification / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); utiariti: Specific name utiariti, is in reference to Salto Utiariti, an indigenous word that means in the Pareci nation's laguage "place of clever people' (utia =clever; halíti =people). Pareci tribe is in the upper rio Tapajós drainage, at type locality..
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
South America: known only from rio Papagaio of the upper rio Tapajós drainage in Brazil.
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 7.9 cm SL αρσενικό/απροσδιόριστο; (Ref. 75035)
Short description
Μορφολογία | Μορφομετρία
Μαλακές ραχιαίες ακτίνες (συνολικά): 11; Σπόνδυλοι: 34 - 35. Diagnosed from most members of the genus Astyanax and include it in the A. bimaculatus species group by its horizontally elongate oval, black humeral spot, lozenge shaped caudal-peduncle spot continued into middle caudal-fin rays, and two brown bars in the humeral region. Can be differentiated from species of this group by the following combination of characters: a reticulate scale pattern, a black longitudinal stripe, a toothless maxilla, larger dentary teeth, teeth of the inner row of the premaxilla with five to seven cusps, body depth 33.3-39.9% of SL, predorsal distance 51.7-55.5% of SL, caudal peduncle depth 12.0-13.4% of SL, head length 23.9-26.4% of SL, orbital diameter 28.5- 34.3% of HL, interorbital width 32.7-38.4% of HL, 36-38 perforated scales along the lateral line, and 22-26 branched anal-fin rays, 25-29 total (Ref. 75035).
Found in a large river which has several waterfalls, with crystalline water, segments with rapids, a well developed riparian vegetation and a substrate of stones, rocks and sand (Ref. 75035). Occurs along the left bank of the river in semilentic stretches (Ref. 75035).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Bertaco, V.A. and V. Garutti, 2007. New Astyanax from the upper Rio Tapajós drainage, Central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 5(1):25-30. (Ref. 75035)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Περισσότερες πληροφορίες
Κοινά ονόματαΣυνώνυμαΜεταβολισμόςΘηρευτέςΟικοτοξικολογίαΑναπαραγωγήΓεννητική ΩρίμανσηΓεννοβολίαΣυναθροίσεις γεννοβολίαςΓονιμότηταΑβγάEgg development
Age/SizeΑύξησηLength-weightLength-lengthLength-frequenciesΜορφομετρίαΜορφολογίαΠρονύμφεςΔυναμική προνυμφώνΣτρατολόγησηΑφθονίαBRUVS
ΑναφορέςΥδατοκαλλιέργειεςΠροφίλ υδατοκαλλιέργειαςΣτελέχοιΓενετικήElectrophoresesΚληρονομικότηταΑσθένειεςΜεταποίησηNutrientsMass conversion
ΣυνεργάτεςΦωτογραφίεςStamps, Coins Misc.ΉχοιΣιγκουατέραΤαχύτηταΚολυμβητικός ΤύποςΕπιφάνεια βραγχίωνOtolithsΕγκέφαλοιΌραση
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=0.01148 (0.00526 - 0.02507), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 2.9 ±0.4 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).
