Acestrocephalus Nigrifasciatus (Acestrocephalus nigrifasciatus) is a ray-finned fish of the family Characidae. It inhabits freshwater waters. This species can reach a maximum total length of 9.3 cm. With a trophic level of 3.6, it is a mid-level predator. It is assessed as Data Deficient on the IUCN Red List.
Dorsal soft rays (total): 11; Anal soft rays: 31 - 35; Vertebrae: 37 - 38. Both Acestrocephalus nigrifasciatus and Acestrocephalus sardina have the same color pattern and eye size, distinct from all their congeners. In addition, Acestrocephalus nigrifasciatus has more scale rows above (13-14 vs. 10-12) and below (12-13 vs. 10-12) lateral line. Differs from Acestrocephalus sardina by having longer and narrower muscular hiatus of the pseudotympanum than that of Acestrocephalus sardina; and the fibers of the obliquus inferioris muscle are not visible as in the latter species . : fusiform / normal.
Behavioural data for Acestrocephalus Nigrifasciatus is currently being reviewed.
Diet information for Acestrocephalus Nigrifasciatus is currently being compiled.
Reproduction data for Acestrocephalus Nigrifasciatus is currently being compiled.
Freshwater; benthopelagic. Tropical South America: Rio Arinos and Rio Juruena, and rio Tapajós basin in Brazil.
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