Acestrocephalus Stigmatus (Acestrocephalus stigmatus) is a ray-finned fish of the family Characidae. It inhabits freshwater waters. This species can reach a maximum total length of 13.5 cm. With a trophic level of 3.7, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.
Dorsal soft rays (total): 11; Anal soft rays: 33 - 35; Vertebrae: 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 . : fusiform / normal.
Behavioural data for Acestrocephalus Stigmatus is currently being reviewed.
Diet information for Acestrocephalus Stigmatus is currently being compiled.
Reproduction data for Acestrocephalus Stigmatus is currently being compiled.
Freshwater; benthopelagic. Tropical South America: Rio Tocantins, Rio das Mortes (tributary of Rio Araguaia) and Rio Xingu in Brazil.
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