Classification / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: diamantina: The specific name diamantina is in reference to the type region, the Chapada Diamantina.
Eponymy: Dr William J Moenkhaus (1871–1947) was an American geneticist and ichthyologist who became Professor of Physiology at Indiana University Medical School (1904–1941), where he was Eigenmann’s colleague. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
South America: upper and middle course of rio Paraguaçu, Brazil which have several relatively small tributaries entering its margins.
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 6.6 cm SL αρσενικό/απροσδιόριστο; (Ref. 75036)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Μαλακές ραχιαίες ακτίνες (συνολικά) : 11; Μαλακές εδρικές ακτίνες: 28 - 31. Diagnosed from all members of the genus Moenkhausia by the body color pattern, the presence of scales on the predorsal median line and the number of anal-fin rays. Distinguished from Moenkhausia levidorsa in having a regularly scaled predorsal line (vs. a naked predorsal line); and differs from other congeners, except for Moenkhausia oligolepis, Moenkhausia sanctaefilomenae, Moenkhausia pyrophthalma, Moenkhausia nigromarginata and Moenkhausia diktyota, by having a reticulated body pigmentation pattern. Differs further from all congeners with a reticulated body pigmentation pattern, except for Moenkhausia nigromarginata, by the absence of a conspicuous dark blotch in the caudal peduncle; further distinguished from Moenkhausia sanctaefilomenae and Moenkhausia oligolepis by its higher number of pored lateral line scales (32-34 vs. 22-24, 27-30, respectively); and differs from Moenkhausia diktyota in the extent of the poring of the lateral line (complete vs. incomplete). Can be differentiated from Moenkhausia nigromarginata by the absence of a black stripe on the anterior edge of dorsal, pelvic and anal fins, and absence of longitudinal stripes on the body positioned over the center of the scales (vs. presence of both pigmentation patterns) and the number of anal-fin rays (iv, 24-26; vs. ii-iv, 20-22) (Ref. 75036).
Inhabits blackwater rivers. The type locality (rio Toalhas) of this species has a sandy and rocky bottom, with little riparian and submerged vegetation (Ref. 75036).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Benine, R.C., R.M.C. Castro and A.C.A. Santos, 2007. A new Moenkhausia Eigenmann, 1903 (Ostariophysi: Characiformes) from Chapada Diamantina, rio Paraguaçu Basin, Bahia, Northeastern Brazil. Neotrop. Ichthyol. 5(3):259-262. (Ref. 75036)
IUCN Red List Status (Ref. 130435: Version 2024-1)
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=0.01230 (0.00522 - 0.02900), 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): 3.4 ±0.5 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).
