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Acestrocephalus pallidus in Brazil

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Acestrocephalus pallidus   Menezes, 2006
Family:	Characidae (Characins) , subfamily: Characinae			picture (Acpal_f0.gif) by Menezes, N.A.
Order:	Characiformes  (characins)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:
Max. size:	6.1 cm SL (male/unsexed; Ref. 75890)
Environment:	benthopelagic
Climate:	tropical
Global Importance:
Resilience:	High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Distribution:	South America: known only from rio Madeira and rio Machado, a tributary of rio Madeira in Brazil.
Diagnosis:	Dorsal soft rays (total): 11-11; Anal soft rays: 36-40; Vertebrae: 38-39. Can be distinguished from Acestrocephalus boehlkei, Acestrocephalus maculosus and Acestrocephalus stigmatus by the absence of dark humeral blotch characteristic of these species. Differs from Acestrocephalus sardina and Acestrocephalus nigrifasciatus by having smaller eye and fewer maxillary teeth (30-38 vs. 40-46). Can be separated from Acestrocephalus acutus by possessing only scattered dark chromatophores instead of the typical oblong dark blotch on the caudal-fin base of that species and the first pleural rib, the cavity anterior to it and the obliquus inferioris muscle visible (vs. entirely covered by the fibers of the obliquus superioris muscle in Acestrocephalus acutus (Ref. 75890). Description: Dorsal fin ii,9; Anal fin iv,32-36; Pectoral fin i+11-15; Pelvic fin i+7 (Ref. 75890).
Biology:
Threatened:	Not Evaluated, see IUCN Red List  , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Menezes, N.A.. 2006. (Ref. 75890)
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Brazil country information
Common names:	[ No common name ]		Ref:
Status:	native		Ref:
Salinity:	freshwater
Regulations:	no regulations		Ref:
Uses:	no uses
Comments:	Found only in rio Madeira and rio Machado, a tributary of rio Madeira (Ref. 75890).
States/Provinces:
States/Provinces Complete?:	No
Country Information:	www.cia.gov/cia/publications/factbook/geos/br.html
Occurrences:	Occurrences    Point map
Main Ref:	Menezes, N.A., 2006
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	Note: No data are available if label is black .
Tools:	Biogeographic modelling | E-book | Field guide | Length-frequency Wizard | Life-history tool |
Internet sources:	BiOSC Point Data | CISTI | Google | GOBASE | GenBank ( genome, nucleotide ) | PubMed | Scirus | Tree of Life |   Neodat | Zoological Record
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	Entered:  Torres, Armi G.

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07