Issue
Species-level distinctiveness of Tocantins and Amazonas Megalodoras not investigated.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθικό(ς). Tropical; 22°C - 25°C (Ref. 2059)
South America: Amazon, Tocantins and Essequibo River basins.
Length at first maturity / Μέγεθος / Βάρος / Age
Maturity: Lm ?, range 54 - ? cm
Max length : 53.0 cm SL αρσενικό/απροσδιόριστο; (Ref. 9081); 60.0 cm SL (female); common length : 49.0 cm SL αρσενικό/απροσδιόριστο; (Ref. 9081); μεγ. δημοσιευμένο βάρος: 2.9 kg (Ref. 9081); μεγ. δημοσιευμένο βάρος: 2.9 kg
Occurs in small groups and occasionally forms schools. Inhabits rivers. Is mainly diurnal. Feeds on the fruits of Licania longipetala and Astrocaryum jauary. Also feeds on pulmonate snails (Ref. 9086).
Life cycle and mating behavior
Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες
Sabaj, M.H. and C.J. Ferraris Jr., 2003. Doradidae (Thorny catfishes). p. 456-469. 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. 37054)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Εργαλεία
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00559 - 0.01790), b=3.06 (2.90 - 3.22), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 2.7 ±0.39 se; based on food items.
Ελαστικότητα (Ref.
120179): Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (49 of 100).