Klassifizierung / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Characinae
Etymology: Acestrocephalus: Greek, agkistron = hook + Greek, kepahle = head (Ref. 45335); stigmatus: Derived from the Greek word stigma, meaning mark, spot, in reference to the dark spot found at the humeral region of this species..
Environment: milieu / climate zone / depth range / distribution range
Ökologie
; süßwasser benthopelagisch. Tropical
South America: Rio Tocantins, Rio das Mortes (tributary of Rio Araguaia) and Rio Xingu in Brazil.
Size / Gewicht / Alter
Maturity: Lm ?  range ? - ? cm
Max length : 13.5 cm TL Männchen/unbestimmt; (Ref. 111518); max. veröff. Gewicht: 45.00 g (Ref. 111518)
Rückenflossenweichstrahlen (insgesamt) : 11; Afterflossenweichstrahlen: 33 - 35; Wirbelzahl: 38 - 39. Distinguished from all species of Acestrocephalusexcept Acestrocephalus boehlkei and Acestrocephalus maculosus by having a dark humeral blotch. Differs from Acestrocephalus boehlkei in having fewer anal-fin rays 29-31 (vs. 34-36) and fewer
scale rows around caudal peduncle 22-23 (vs. 25); and from Acestrocephalus maculosus in having more anal-fin rays 29-31 (vs. 25-27). The muscular hiatus of the pseudotympanum in Acestrocephalus stigmatus is narrower than that of Acestrocephalus boehlkei, but much more developed than that of Acestrocephalus
maculosus (Ref. 75890).
Life cycle and mating behavior
Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven
Menezes, N.A., 2006. Description of five new species of Acestrocephalus Eigenmann and redescription of A. sardina and A. boehlkei (Characiformes: Characidae). Neotrop. Ichthyol. 4(4):385-400. (Ref. 75890)
IUCN Rote Liste Status (Ref. 130435)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00449 - 0.01852), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (Ref.
69278): 3.7 ±0.6 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).